Home / 12,537.28-17,300.78-7,231.78

Finding the Fourth Proportional to 12,537.28, 17,300.78 and 7,231.78

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Solution

The fourth proportional to 12,537.28, 17,300.78 and 7,231.78 is: 9,979.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,537.28 : 17,300.78 = 7,231.78 : x
  2. Step 2: Convert to fraction form
    12,537.28/17,300.78 = 7,231.78/x
  3. Step 3: Cross multiply
    12,537.28x = 17,300.78 × 7,231.78
  4. Step 4: Simplify right side
    12,537.28x = 125,115,434.79
  5. Step 5: Solve for x
    x = 125,115,434.79/12,537.28
  6. Step 6: Final answer
    x = 9,979.47

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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.