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Finding the Fourth Proportional to 13,008.66, 17,951.88 and 7,040.32

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Solution

The fourth proportional to 13,008.66, 17,951.88 and 7,040.32 is: 9,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.66 : 17,951.88 = 7,040.32 : x
  2. Step 2: Convert to fraction form
    13,008.66/17,951.88 = 7,040.32/x
  3. Step 3: Cross multiply
    13,008.66x = 17,951.88 × 7,040.32
  4. Step 4: Simplify right side
    13,008.66x = 126,386,979.80
  5. Step 5: Solve for x
    x = 126,386,979.80/13,008.66
  6. Step 6: Final answer
    x = 9,715.60

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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.