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Finding the Fourth Proportional to 12,160.60, 18,215.62 and 10,681.65

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Solution

The fourth proportional to 12,160.60, 18,215.62 and 10,681.65 is: 16,000.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.60 : 18,215.62 = 10,681.65 : x
  2. Step 2: Convert to fraction form
    12,160.60/18,215.62 = 10,681.65/x
  3. Step 3: Cross multiply
    12,160.60x = 18,215.62 × 10,681.65
  4. Step 4: Simplify right side
    12,160.60x = 194,572,850.67
  5. Step 5: Solve for x
    x = 194,572,850.67/12,160.60
  6. Step 6: Final answer
    x = 16,000.27

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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.