Home / 12,726.28-17,564.34-7,139.08

Finding the Fourth Proportional to 12,726.28, 17,564.34 and 7,139.08

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Solution

The fourth proportional to 12,726.28, 17,564.34 and 7,139.08 is: 9,853.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726.28 : 17,564.34 = 7,139.08 : x
  2. Step 2: Convert to fraction form
    12,726.28/17,564.34 = 7,139.08/x
  3. Step 3: Cross multiply
    12,726.28x = 17,564.34 × 7,139.08
  4. Step 4: Simplify right side
    12,726.28x = 125,393,228.41
  5. Step 5: Solve for x
    x = 125,393,228.41/12,726.28
  6. Step 6: Final answer
    x = 9,853.09

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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.