Home / 12,423.20-17,138.25-7,384.59

Finding the Fourth Proportional to 12,423.20, 17,138.25 and 7,384.59

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Solution

The fourth proportional to 12,423.20, 17,138.25 and 7,384.59 is: 10,187.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.20 : 17,138.25 = 7,384.59 : x
  2. Step 2: Convert to fraction form
    12,423.20/17,138.25 = 7,384.59/x
  3. Step 3: Cross multiply
    12,423.20x = 17,138.25 × 7,384.59
  4. Step 4: Simplify right side
    12,423.20x = 126,558,949.57
  5. Step 5: Solve for x
    x = 126,558,949.57/12,423.20
  6. Step 6: Final answer
    x = 10,187.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.