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Finding the Fourth Proportional to 12,658.59, 18,988.82 and 4,867.41

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Solution

The fourth proportional to 12,658.59, 18,988.82 and 4,867.41 is: 7,301.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.59 : 18,988.82 = 4,867.41 : x
  2. Step 2: Convert to fraction form
    12,658.59/18,988.82 = 4,867.41/x
  3. Step 3: Cross multiply
    12,658.59x = 18,988.82 × 4,867.41
  4. Step 4: Simplify right side
    12,658.59x = 92,426,348.02
  5. Step 5: Solve for x
    x = 92,426,348.02/12,658.59
  6. Step 6: Final answer
    x = 7,301.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.