Home / 12,579.27-17,358.36-7,274.42

Finding the Fourth Proportional to 12,579.27, 17,358.36 and 7,274.42

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Solution

The fourth proportional to 12,579.27, 17,358.36 and 7,274.42 is: 10,038.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.27 : 17,358.36 = 7,274.42 : x
  2. Step 2: Convert to fraction form
    12,579.27/17,358.36 = 7,274.42/x
  3. Step 3: Cross multiply
    12,579.27x = 17,358.36 × 7,274.42
  4. Step 4: Simplify right side
    12,579.27x = 126,272,001.15
  5. Step 5: Solve for x
    x = 126,272,001.15/12,579.27
  6. Step 6: Final answer
    x = 10,038.11

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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.