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Finding the Fourth Proportional to 12,681.91, 17,500.55 and 7,016.89

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Solution

The fourth proportional to 12,681.91, 17,500.55 and 7,016.89 is: 9,683.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.91 : 17,500.55 = 7,016.89 : x
  2. Step 2: Convert to fraction form
    12,681.91/17,500.55 = 7,016.89/x
  3. Step 3: Cross multiply
    12,681.91x = 17,500.55 × 7,016.89
  4. Step 4: Simplify right side
    12,681.91x = 122,799,434.29
  5. Step 5: Solve for x
    x = 122,799,434.29/12,681.91
  6. Step 6: Final answer
    x = 9,683.04

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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.