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Finding the Fourth Proportional to 12,000.58, 17,991.15 and 5,423.38

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Solution

The fourth proportional to 12,000.58, 17,991.15 and 5,423.38 is: 8,130.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.58 : 17,991.15 = 5,423.38 : x
  2. Step 2: Convert to fraction form
    12,000.58/17,991.15 = 5,423.38/x
  3. Step 3: Cross multiply
    12,000.58x = 17,991.15 × 5,423.38
  4. Step 4: Simplify right side
    12,000.58x = 97,572,843.09
  5. Step 5: Solve for x
    x = 97,572,843.09/12,000.58
  6. Step 6: Final answer
    x = 8,130.68

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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.