Home / 15,372.33-21,225.52-15,127.21

Finding the Fourth Proportional to 15,372.33, 21,225.52 and 15,127.21

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Solution

The fourth proportional to 15,372.33, 21,225.52 and 15,127.21 is: 20,887.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372.33 : 21,225.52 = 15,127.21 : x
  2. Step 2: Convert to fraction form
    15,372.33/21,225.52 = 15,127.21/x
  3. Step 3: Cross multiply
    15,372.33x = 21,225.52 × 15,127.21
  4. Step 4: Simplify right side
    15,372.33x = 321,082,781.90
  5. Step 5: Solve for x
    x = 321,082,781.90/15,372.33
  6. Step 6: Final answer
    x = 20,887.06

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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.