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Finding the Fourth Proportional to 47,287.67, 70,921.67 and 13,999.92

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Solution

The fourth proportional to 47,287.67, 70,921.67 and 13,999.92 is: 20,996.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,287.67 : 70,921.67 = 13,999.92 : x
  2. Step 2: Convert to fraction form
    47,287.67/70,921.67 = 13,999.92/x
  3. Step 3: Cross multiply
    47,287.67x = 70,921.67 × 13,999.92
  4. Step 4: Simplify right side
    47,287.67x = 992,897,636.27
  5. Step 5: Solve for x
    x = 992,897,636.27/47,287.67
  6. Step 6: Final answer
    x = 20,996.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.