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Finding the Fourth Proportional to 12,089.10, 18,133.65 and 9,929.10

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Solution

The fourth proportional to 12,089.10, 18,133.65 and 9,929.10 is: 14,893.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.10 : 18,133.65 = 9,929.10 : x
  2. Step 2: Convert to fraction form
    12,089.10/18,133.65 = 9,929.10/x
  3. Step 3: Cross multiply
    12,089.10x = 18,133.65 × 9,929.10
  4. Step 4: Simplify right side
    12,089.10x = 180,050,824.22
  5. Step 5: Solve for x
    x = 180,050,824.22/12,089.10
  6. Step 6: Final answer
    x = 14,893.65

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Similar ratio
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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.