Home / 15,240.85-21,073.23-13,372.79

Finding the Fourth Proportional to 15,240.85, 21,073.23 and 13,372.79

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Solution

The fourth proportional to 15,240.85, 21,073.23 and 13,372.79 is: 18,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,240.85 : 21,073.23 = 13,372.79 : x
  2. Step 2: Convert to fraction form
    15,240.85/21,073.23 = 13,372.79/x
  3. Step 3: Cross multiply
    15,240.85x = 21,073.23 × 13,372.79
  4. Step 4: Simplify right side
    15,240.85x = 281,807,774.05
  5. Step 5: Solve for x
    x = 281,807,774.05/15,240.85
  6. Step 6: Final answer
    x = 18,490.30

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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.