Home / 15,442.50-21,305.70-9,471.18

Finding the Fourth Proportional to 15,442.50, 21,305.70 and 9,471.18

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Solution

The fourth proportional to 15,442.50, 21,305.70 and 9,471.18 is: 13,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.50 : 21,305.70 = 9,471.18 : x
  2. Step 2: Convert to fraction form
    15,442.50/21,305.70 = 9,471.18/x
  3. Step 3: Cross multiply
    15,442.50x = 21,305.70 × 9,471.18
  4. Step 4: Simplify right side
    15,442.50x = 201,790,119.73
  5. Step 5: Solve for x
    x = 201,790,119.73/15,442.50
  6. Step 6: Final answer
    x = 13,067.19

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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.