Home / 9,179,428.80-13,769,143.20-8,187,405.60

Finding the Fourth Proportional to 9,179,428.80, 13,769,143.20 and 8,187,405.60

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Solution

The fourth proportional to 9,179,428.80, 13,769,143.20 and 8,187,405.60 is: 12,281,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179,428.80 : 13,769,143.20 = 8,187,405.60 : x
  2. Step 2: Convert to fraction form
    9,179,428.80/13,769,143.20 = 8,187,405.60/x
  3. Step 3: Cross multiply
    9,179,428.80x = 13,769,143.20 × 8,187,405.60
  4. Step 4: Simplify right side
    9,179,428.80x = 112,733,560,142,881.91
  5. Step 5: Solve for x
    x = 112,733,560,142,881.91/9,179,428.80
  6. Step 6: Final answer
    x = 12,281,108.40

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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.