Home / 20,658.29-28,560.53-15,272.22

Finding the Fourth Proportional to 20,658.29, 28,560.53 and 15,272.22

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Solution

The fourth proportional to 20,658.29, 28,560.53 and 15,272.22 is: 21,114.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.29 : 28,560.53 = 15,272.22 : x
  2. Step 2: Convert to fraction form
    20,658.29/28,560.53 = 15,272.22/x
  3. Step 3: Cross multiply
    20,658.29x = 28,560.53 × 15,272.22
  4. Step 4: Simplify right side
    20,658.29x = 436,182,842.76
  5. Step 5: Solve for x
    x = 436,182,842.76/20,658.29
  6. Step 6: Final answer
    x = 21,114.18

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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.