Home / 15,490.52-21,376.20-9,520.04

Finding the Fourth Proportional to 15,490.52, 21,376.20 and 9,520.04

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Solution

The fourth proportional to 15,490.52, 21,376.20 and 9,520.04 is: 13,137.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.52 : 21,376.20 = 9,520.04 : x
  2. Step 2: Convert to fraction form
    15,490.52/21,376.20 = 9,520.04/x
  3. Step 3: Cross multiply
    15,490.52x = 21,376.20 × 9,520.04
  4. Step 4: Simplify right side
    15,490.52x = 203,502,279.05
  5. Step 5: Solve for x
    x = 203,502,279.05/15,490.52
  6. Step 6: Final answer
    x = 13,137.21

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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.