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Finding the Fourth Proportional to 40,287.30, 60,430.95 and 13,983.30

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Solution

The fourth proportional to 40,287.30, 60,430.95 and 13,983.30 is: 20,974.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,287.30 : 60,430.95 = 13,983.30 : x
  2. Step 2: Convert to fraction form
    40,287.30/60,430.95 = 13,983.30/x
  3. Step 3: Cross multiply
    40,287.30x = 60,430.95 × 13,983.30
  4. Step 4: Simplify right side
    40,287.30x = 845,024,103.14
  5. Step 5: Solve for x
    x = 845,024,103.14/40,287.30
  6. Step 6: Final answer
    x = 20,974.95

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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.