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Finding the Fourth Proportional to 12,424.62, 18,640.98 and 5,851.47

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Solution

The fourth proportional to 12,424.62, 18,640.98 and 5,851.47 is: 8,779.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,424.62 : 18,640.98 = 5,851.47 : x
  2. Step 2: Convert to fraction form
    12,424.62/18,640.98 = 5,851.47/x
  3. Step 3: Cross multiply
    12,424.62x = 18,640.98 × 5,851.47
  4. Step 4: Simplify right side
    12,424.62x = 109,077,135.24
  5. Step 5: Solve for x
    x = 109,077,135.24/12,424.62
  6. Step 6: Final answer
    x = 8,779.11

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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.