Home / 28,132.20-38,816.82-15,554.52

Finding the Fourth Proportional to 28,132.20, 38,816.82 and 15,554.52

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Solution

The fourth proportional to 28,132.20, 38,816.82 and 15,554.52 is: 21,462.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.20 : 38,816.82 = 15,554.52 : x
  2. Step 2: Convert to fraction form
    28,132.20/38,816.82 = 15,554.52/x
  3. Step 3: Cross multiply
    28,132.20x = 38,816.82 × 15,554.52
  4. Step 4: Simplify right side
    28,132.20x = 603,777,003.03
  5. Step 5: Solve for x
    x = 603,777,003.03/28,132.20
  6. Step 6: Final answer
    x = 21,462.13

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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.