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Finding the Fourth Proportional to 12,488.96, 18,717.30 and 9,344.30

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Solution

The fourth proportional to 12,488.96, 18,717.30 and 9,344.30 is: 14,004.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.96 : 18,717.30 = 9,344.30 : x
  2. Step 2: Convert to fraction form
    12,488.96/18,717.30 = 9,344.30/x
  3. Step 3: Cross multiply
    12,488.96x = 18,717.30 × 9,344.30
  4. Step 4: Simplify right side
    12,488.96x = 174,899,926.08
  5. Step 5: Solve for x
    x = 174,899,926.08/12,488.96
  6. Step 6: Final answer
    x = 14,004.36

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1.5x scale

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.