Home / 15,508.13-21,391.62-13,523.45

Finding the Fourth Proportional to 15,508.13, 21,391.62 and 13,523.45

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Solution

The fourth proportional to 15,508.13, 21,391.62 and 13,523.45 is: 18,653.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,508.13 : 21,391.62 = 13,523.45 : x
  2. Step 2: Convert to fraction form
    15,508.13/21,391.62 = 13,523.45/x
  3. Step 3: Cross multiply
    15,508.13x = 21,391.62 × 13,523.45
  4. Step 4: Simplify right side
    15,508.13x = 289,288,503.49
  5. Step 5: Solve for x
    x = 289,288,503.49/15,508.13
  6. Step 6: Final answer
    x = 18,653.99

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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.