Home / 20,718,664.40-31,068,665.40-7,934,920.40

Finding the Fourth Proportional to 20,718,664.40, 31,068,665.40 and 7,934,920.40

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Solution

The fourth proportional to 20,718,664.40, 31,068,665.40 and 7,934,920.40 is: 11,898,806.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,664.40 : 31,068,665.40 = 7,934,920.40 : x
  2. Step 2: Convert to fraction form
    20,718,664.40/31,068,665.40 = 7,934,920.40/x
  3. Step 3: Cross multiply
    20,718,664.40x = 31,068,665.40 × 7,934,920.40
  4. Step 4: Simplify right side
    20,718,664.40x = 246,527,386,883,234.16
  5. Step 5: Solve for x
    x = 246,527,386,883,234.16/20,718,664.40
  6. Step 6: Final answer
    x = 11,898,806.90

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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.