Home / 28,160.56-38,861.76-15,585.52

Finding the Fourth Proportional to 28,160.56, 38,861.76 and 15,585.52

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Solution

The fourth proportional to 28,160.56, 38,861.76 and 15,585.52 is: 21,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.56 : 38,861.76 = 15,585.52 : x
  2. Step 2: Convert to fraction form
    28,160.56/38,861.76 = 15,585.52/x
  3. Step 3: Cross multiply
    28,160.56x = 38,861.76 × 15,585.52
  4. Step 4: Simplify right side
    28,160.56x = 605,680,737.72
  5. Step 5: Solve for x
    x = 605,680,737.72/28,160.56
  6. Step 6: Final answer
    x = 21,508.12

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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.