Home / 15,474.12-21,354.48-8,400.66

Finding the Fourth Proportional to 15,474.12, 21,354.48 and 8,400.66

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Solution

The fourth proportional to 15,474.12, 21,354.48 and 8,400.66 is: 11,593.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.12 : 21,354.48 = 8,400.66 : x
  2. Step 2: Convert to fraction form
    15,474.12/21,354.48 = 8,400.66/x
  3. Step 3: Cross multiply
    15,474.12x = 21,354.48 × 8,400.66
  4. Step 4: Simplify right side
    15,474.12x = 179,391,725.96
  5. Step 5: Solve for x
    x = 179,391,725.96/15,474.12
  6. Step 6: Final answer
    x = 11,593.02

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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.