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Finding the Fourth Proportional to 15,016.62, 20,729 and 9,053.40

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Solution

The fourth proportional to 15,016.62, 20,729 and 9,053.40 is: 12,497.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.62 : 20,729 = 9,053.40 : x
  2. Step 2: Convert to fraction form
    15,016.62/20,729 = 9,053.40/x
  3. Step 3: Cross multiply
    15,016.62x = 20,729 × 9,053.40
  4. Step 4: Simplify right side
    15,016.62x = 187,667,928.60
  5. Step 5: Solve for x
    x = 187,667,928.60/15,016.62
  6. Step 6: Final answer
    x = 12,497.35

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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.