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Finding the Fourth Proportional to 43,487.91, 65,240.06 and 13,897.80

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Solution

The fourth proportional to 43,487.91, 65,240.06 and 13,897.80 is: 20,849.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,487.91 : 65,240.06 = 13,897.80 : x
  2. Step 2: Convert to fraction form
    43,487.91/65,240.06 = 13,897.80/x
  3. Step 3: Cross multiply
    43,487.91x = 65,240.06 × 13,897.80
  4. Step 4: Simplify right side
    43,487.91x = 906,693,236.38
  5. Step 5: Solve for x
    x = 906,693,236.38/43,487.91
  6. Step 6: Final answer
    x = 20,849.32

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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.