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Finding the Fourth Proportional to 9,901.47, 13,664.03 and 5,425.18

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Solution

The fourth proportional to 9,901.47, 13,664.03 and 5,425.18 is: 7,486.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,901.47 : 13,664.03 = 5,425.18 : x
  2. Step 2: Convert to fraction form
    9,901.47/13,664.03 = 5,425.18/x
  3. Step 3: Cross multiply
    9,901.47x = 13,664.03 × 5,425.18
  4. Step 4: Simplify right side
    9,901.47x = 74,129,822.28
  5. Step 5: Solve for x
    x = 74,129,822.28/9,901.47
  6. Step 6: Final answer
    x = 7,486.75

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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.