Home / 12,168,152.40-18,252,228.60-7,381,246.80

Finding the Fourth Proportional to 12,168,152.40, 18,252,228.60 and 7,381,246.80

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Solution

The fourth proportional to 12,168,152.40, 18,252,228.60 and 7,381,246.80 is: 11,071,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168,152.40 : 18,252,228.60 = 7,381,246.80 : x
  2. Step 2: Convert to fraction form
    12,168,152.40/18,252,228.60 = 7,381,246.80/x
  3. Step 3: Cross multiply
    12,168,152.40x = 18,252,228.60 × 7,381,246.80
  4. Step 4: Simplify right side
    12,168,152.40x = 134,724,203,946,618.48
  5. Step 5: Solve for x
    x = 134,724,203,946,618.48/12,168,152.40
  6. Step 6: Final answer
    x = 11,071,870.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.