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Finding the Fourth Proportional to 18,320.48, 25,282.48 and 9,937.12

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Solution

The fourth proportional to 18,320.48, 25,282.48 and 9,937.12 is: 13,713.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.48 : 25,282.48 = 9,937.12 : x
  2. Step 2: Convert to fraction form
    18,320.48/25,282.48 = 9,937.12/x
  3. Step 3: Cross multiply
    18,320.48x = 25,282.48 × 9,937.12
  4. Step 4: Simplify right side
    18,320.48x = 251,235,037.66
  5. Step 5: Solve for x
    x = 251,235,037.66/18,320.48
  6. Step 6: Final answer
    x = 13,713.34

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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.