Home / 15,381,007.20-23,071,510.80-12,880,245.60

Finding the Fourth Proportional to 15,381,007.20, 23,071,510.80 and 12,880,245.60

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Solution

The fourth proportional to 15,381,007.20, 23,071,510.80 and 12,880,245.60 is: 19,320,368.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381,007.20 : 23,071,510.80 = 12,880,245.60 : x
  2. Step 2: Convert to fraction form
    15,381,007.20/23,071,510.80 = 12,880,245.60/x
  3. Step 3: Cross multiply
    15,381,007.20x = 23,071,510.80 × 12,880,245.60
  4. Step 4: Simplify right side
    15,381,007.20x = 297,166,725,467,052.50
  5. Step 5: Solve for x
    x = 297,166,725,467,052.50/15,381,007.20
  6. Step 6: Final answer
    x = 19,320,368.40

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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.