Home / 28,008.08-38,652.88-15,432.80

Finding the Fourth Proportional to 28,008.08, 38,652.88 and 15,432.80

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Solution

The fourth proportional to 28,008.08, 38,652.88 and 15,432.80 is: 21,298.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.08 : 38,652.88 = 15,432.80 : x
  2. Step 2: Convert to fraction form
    28,008.08/38,652.88 = 15,432.80/x
  3. Step 3: Cross multiply
    28,008.08x = 38,652.88 × 15,432.80
  4. Step 4: Simplify right side
    28,008.08x = 596,522,166.46
  5. Step 5: Solve for x
    x = 596,522,166.46/28,008.08
  6. Step 6: Final answer
    x = 21,298.22

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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.