Home / 28,135.20-38,820.96-15,557.52

Finding the Fourth Proportional to 28,135.20, 38,820.96 and 15,557.52

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Solution

The fourth proportional to 28,135.20, 38,820.96 and 15,557.52 is: 21,466.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,135.20 : 38,820.96 = 15,557.52 : x
  2. Step 2: Convert to fraction form
    28,135.20/38,820.96 = 15,557.52/x
  3. Step 3: Cross multiply
    28,135.20x = 38,820.96 × 15,557.52
  4. Step 4: Simplify right side
    28,135.20x = 603,957,861.62
  5. Step 5: Solve for x
    x = 603,957,861.62/28,135.20
  6. Step 6: Final answer
    x = 21,466.27

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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.