Home / 21,327.18-29,391.03-15,348.30

Finding the Fourth Proportional to 21,327.18, 29,391.03 and 15,348.30

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Solution

The fourth proportional to 21,327.18, 29,391.03 and 15,348.30 is: 21,151.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.18 : 29,391.03 = 15,348.30 : x
  2. Step 2: Convert to fraction form
    21,327.18/29,391.03 = 15,348.30/x
  3. Step 3: Cross multiply
    21,327.18x = 29,391.03 × 15,348.30
  4. Step 4: Simplify right side
    21,327.18x = 451,102,345.75
  5. Step 5: Solve for x
    x = 451,102,345.75/21,327.18
  6. Step 6: Final answer
    x = 21,151.52

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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.