Home / 20,700,223.65-28,566,420.93-11,878,972.43

Finding the Fourth Proportional to 20,700,223.65, 28,566,420.93 and 11,878,972.43

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Solution

The fourth proportional to 20,700,223.65, 28,566,420.93 and 11,878,972.43 is: 16,393,046.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700,223.65 : 28,566,420.93 = 11,878,972.43 : x
  2. Step 2: Convert to fraction form
    20,700,223.65/28,566,420.93 = 11,878,972.43/x
  3. Step 3: Cross multiply
    20,700,223.65x = 28,566,420.93 × 11,878,972.43
  4. Step 4: Simplify right side
    20,700,223.65x = 339,339,726,508,412.88
  5. Step 5: Solve for x
    x = 339,339,726,508,412.88/20,700,223.65
  6. Step 6: Final answer
    x = 16,393,046.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.