Home / 15,385.60-21,232.42-9,016.78

Finding the Fourth Proportional to 15,385.60, 21,232.42 and 9,016.78

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Solution

The fourth proportional to 15,385.60, 21,232.42 and 9,016.78 is: 12,443.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.60 : 21,232.42 = 9,016.78 : x
  2. Step 2: Convert to fraction form
    15,385.60/21,232.42 = 9,016.78/x
  3. Step 3: Cross multiply
    15,385.60x = 21,232.42 × 9,016.78
  4. Step 4: Simplify right side
    15,385.60x = 191,448,060.01
  5. Step 5: Solve for x
    x = 191,448,060.01/15,385.60
  6. Step 6: Final answer
    x = 12,443.33

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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.