Home / 28,193.68-38,907.42-15,929.14

Finding the Fourth Proportional to 28,193.68, 38,907.42 and 15,929.14

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Solution

The fourth proportional to 28,193.68, 38,907.42 and 15,929.14 is: 21,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,193.68 : 38,907.42 = 15,929.14 : x
  2. Step 2: Convert to fraction form
    28,193.68/38,907.42 = 15,929.14/x
  3. Step 3: Cross multiply
    28,193.68x = 38,907.42 × 15,929.14
  4. Step 4: Simplify right side
    28,193.68x = 619,761,545.68
  5. Step 5: Solve for x
    x = 619,761,545.68/28,193.68
  6. Step 6: Final answer
    x = 21,982.29

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1.5x scale

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.