Home / 28,008.28-38,649.90-15,432.04

Finding the Fourth Proportional to 28,008.28, 38,649.90 and 15,432.04

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Solution

The fourth proportional to 28,008.28, 38,649.90 and 15,432.04 is: 21,295.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.28 : 38,649.90 = 15,432.04 : x
  2. Step 2: Convert to fraction form
    28,008.28/38,649.90 = 15,432.04/x
  3. Step 3: Cross multiply
    28,008.28x = 38,649.90 × 15,432.04
  4. Step 4: Simplify right side
    28,008.28x = 596,446,802.80
  5. Step 5: Solve for x
    x = 596,446,802.80/28,008.28
  6. Step 6: Final answer
    x = 21,295.37

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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.