Home / 15,620,545.80-21,553,787.20-9,815,216.28

Finding the Fourth Proportional to 15,620,545.80, 21,553,787.20 and 9,815,216.28

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Solution

The fourth proportional to 15,620,545.80, 21,553,787.20 and 9,815,216.28 is: 13,543,386.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620,545.80 : 21,553,787.20 = 9,815,216.28 : x
  2. Step 2: Convert to fraction form
    15,620,545.80/21,553,787.20 = 9,815,216.28/x
  3. Step 3: Cross multiply
    15,620,545.80x = 21,553,787.20 × 9,815,216.28
  4. Step 4: Simplify right side
    15,620,545.80x = 211,555,083,021,095.59
  5. Step 5: Solve for x
    x = 211,555,083,021,095.59/15,620,545.80
  6. Step 6: Final answer
    x = 13,543,386.11

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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.