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Finding the Fourth Proportional to 28,047.73, 38,706.05 and 15,301.12

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Solution

The fourth proportional to 28,047.73, 38,706.05 and 15,301.12 is: 21,115.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,047.73 : 38,706.05 = 15,301.12 : x
  2. Step 2: Convert to fraction form
    28,047.73/38,706.05 = 15,301.12/x
  3. Step 3: Cross multiply
    28,047.73x = 38,706.05 × 15,301.12
  4. Step 4: Simplify right side
    28,047.73x = 592,245,766.55
  5. Step 5: Solve for x
    x = 592,245,766.55/28,047.73
  6. Step 6: Final answer
    x = 21,115.64

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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.