Home / 20,807,472.80-31,211,209.20-18,288,048.80

Finding the Fourth Proportional to 20,807,472.80, 31,211,209.20 and 18,288,048.80

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Solution

The fourth proportional to 20,807,472.80, 31,211,209.20 and 18,288,048.80 is: 27,432,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807,472.80 : 31,211,209.20 = 18,288,048.80 : x
  2. Step 2: Convert to fraction form
    20,807,472.80/31,211,209.20 = 18,288,048.80/x
  3. Step 3: Cross multiply
    20,807,472.80x = 31,211,209.20 × 18,288,048.80
  4. Step 4: Simplify right side
    20,807,472.80x = 570,792,116,956,609
  5. Step 5: Solve for x
    x = 570,792,116,956,609/20,807,472.80
  6. Step 6: Final answer
    x = 27,432,073.20

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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.