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Finding the Fourth Proportional to 15,124.88, 20,882.48 and 13,526.56

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Solution

The fourth proportional to 15,124.88, 20,882.48 and 13,526.56 is: 18,675.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.88 : 20,882.48 = 13,526.56 : x
  2. Step 2: Convert to fraction form
    15,124.88/20,882.48 = 13,526.56/x
  3. Step 3: Cross multiply
    15,124.88x = 20,882.48 × 13,526.56
  4. Step 4: Simplify right side
    15,124.88x = 282,468,118.67
  5. Step 5: Solve for x
    x = 282,468,118.67/15,124.88
  6. Step 6: Final answer
    x = 18,675.73

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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.