Home / 15,508.13-21,391.64-13,523.43

Finding the Fourth Proportional to 15,508.13, 21,391.64 and 13,523.43

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Solution

The fourth proportional to 15,508.13, 21,391.64 and 13,523.43 is: 18,653.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,508.13 : 21,391.64 = 13,523.43 : x
  2. Step 2: Convert to fraction form
    15,508.13/21,391.64 = 13,523.43/x
  3. Step 3: Cross multiply
    15,508.13x = 21,391.64 × 13,523.43
  4. Step 4: Simplify right side
    15,508.13x = 289,288,346.13
  5. Step 5: Solve for x
    x = 289,288,346.13/15,508.13
  6. Step 6: Final answer
    x = 18,653.98

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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.