Home / 12,772.62-17,621.21-9,423.47

Finding the Fourth Proportional to 12,772.62, 17,621.21 and 9,423.47

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Solution

The fourth proportional to 12,772.62, 17,621.21 and 9,423.47 is: 13,000.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.62 : 17,621.21 = 9,423.47 : x
  2. Step 2: Convert to fraction form
    12,772.62/17,621.21 = 9,423.47/x
  3. Step 3: Cross multiply
    12,772.62x = 17,621.21 × 9,423.47
  4. Step 4: Simplify right side
    12,772.62x = 166,053,011.41
  5. Step 5: Solve for x
    x = 166,053,011.41/12,772.62
  6. Step 6: Final answer
    x = 13,000.70

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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.