Home / 20,785,613.30-31,161,831.15-8,808,499.70

Finding the Fourth Proportional to 20,785,613.30, 31,161,831.15 and 8,808,499.70

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Solution

The fourth proportional to 20,785,613.30, 31,161,831.15 and 8,808,499.70 is: 13,205,719.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,613.30 : 31,161,831.15 = 8,808,499.70 : x
  2. Step 2: Convert to fraction form
    20,785,613.30/31,161,831.15 = 8,808,499.70/x
  3. Step 3: Cross multiply
    20,785,613.30x = 31,161,831.15 × 8,808,499.70
  4. Step 4: Simplify right side
    20,785,613.30x = 274,488,980,336,225.62
  5. Step 5: Solve for x
    x = 274,488,980,336,225.62/20,785,613.30
  6. Step 6: Final answer
    x = 13,205,719.57

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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.