Home / 15,471.15-21,296.23-13,353.40

Finding the Fourth Proportional to 15,471.15, 21,296.23 and 13,353.40

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Solution

The fourth proportional to 15,471.15, 21,296.23 and 13,353.40 is: 18,381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.15 : 21,296.23 = 13,353.40 : x
  2. Step 2: Convert to fraction form
    15,471.15/21,296.23 = 13,353.40/x
  3. Step 3: Cross multiply
    15,471.15x = 21,296.23 × 13,353.40
  4. Step 4: Simplify right side
    15,471.15x = 284,377,077.68
  5. Step 5: Solve for x
    x = 284,377,077.68/15,471.15
  6. Step 6: Final answer
    x = 18,381.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.