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Finding the Fourth Proportional to 13,292, 18,347.28 and 7,701.92

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Solution

The fourth proportional to 13,292, 18,347.28 and 7,701.92 is: 10,631.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292 : 18,347.28 = 7,701.92 : x
  2. Step 2: Convert to fraction form
    13,292/18,347.28 = 7,701.92/x
  3. Step 3: Cross multiply
    13,292x = 18,347.28 × 7,701.92
  4. Step 4: Simplify right side
    13,292x = 141,309,282.78
  5. Step 5: Solve for x
    x = 141,309,282.78/13,292
  6. Step 6: Final answer
    x = 10,631.15

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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.