Home / 12,147.47-18,213.42-5,125.58

Finding the Fourth Proportional to 12,147.47, 18,213.42 and 5,125.58

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Solution

The fourth proportional to 12,147.47, 18,213.42 and 5,125.58 is: 7,685.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.47 : 18,213.42 = 5,125.58 : x
  2. Step 2: Convert to fraction form
    12,147.47/18,213.42 = 5,125.58/x
  3. Step 3: Cross multiply
    12,147.47x = 18,213.42 × 5,125.58
  4. Step 4: Simplify right side
    12,147.47x = 93,354,337.74
  5. Step 5: Solve for x
    x = 93,354,337.74/12,147.47
  6. Step 6: Final answer
    x = 7,685.09

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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.