Home / 20,539.80-28,337.33-15,175.16

Finding the Fourth Proportional to 20,539.80, 28,337.33 and 15,175.16

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Solution

The fourth proportional to 20,539.80, 28,337.33 and 15,175.16 is: 20,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.80 : 28,337.33 = 15,175.16 : x
  2. Step 2: Convert to fraction form
    20,539.80/28,337.33 = 15,175.16/x
  3. Step 3: Cross multiply
    20,539.80x = 28,337.33 × 15,175.16
  4. Step 4: Simplify right side
    20,539.80x = 430,023,299.16
  5. Step 5: Solve for x
    x = 430,023,299.16/20,539.80
  6. Step 6: Final answer
    x = 20,936.10

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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.