Home / 12,960,016.60-19,440,024.90-7,280,426.20

Finding the Fourth Proportional to 12,960,016.60, 19,440,024.90 and 7,280,426.20

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Solution

The fourth proportional to 12,960,016.60, 19,440,024.90 and 7,280,426.20 is: 10,920,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960,016.60 : 19,440,024.90 = 7,280,426.20 : x
  2. Step 2: Convert to fraction form
    12,960,016.60/19,440,024.90 = 7,280,426.20/x
  3. Step 3: Cross multiply
    12,960,016.60x = 19,440,024.90 × 7,280,426.20
  4. Step 4: Simplify right side
    12,960,016.60x = 141,531,666,610,612.38
  5. Step 5: Solve for x
    x = 141,531,666,610,612.38/12,960,016.60
  6. Step 6: Final answer
    x = 10,920,639.30

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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.