Home / 20,807,619.10-31,211,428.65-18,792,079.90

Finding the Fourth Proportional to 20,807,619.10, 31,211,428.65 and 18,792,079.90

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Solution

The fourth proportional to 20,807,619.10, 31,211,428.65 and 18,792,079.90 is: 28,188,119.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807,619.10 : 31,211,428.65 = 18,792,079.90 : x
  2. Step 2: Convert to fraction form
    20,807,619.10/31,211,428.65 = 18,792,079.90/x
  3. Step 3: Cross multiply
    20,807,619.10x = 31,211,428.65 × 18,792,079.90
  4. Step 4: Simplify right side
    20,807,619.10x = 586,527,660,983,949
  5. Step 5: Solve for x
    x = 586,527,660,983,949/20,807,619.10
  6. Step 6: Final answer
    x = 28,188,119.85

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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.