Home / 13,531.40-18,679.09-8,227.92

Finding the Fourth Proportional to 13,531.40, 18,679.09 and 8,227.92

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Solution

The fourth proportional to 13,531.40, 18,679.09 and 8,227.92 is: 11,358.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.40 : 18,679.09 = 8,227.92 : x
  2. Step 2: Convert to fraction form
    13,531.40/18,679.09 = 8,227.92/x
  3. Step 3: Cross multiply
    13,531.40x = 18,679.09 × 8,227.92
  4. Step 4: Simplify right side
    13,531.40x = 153,690,058.19
  5. Step 5: Solve for x
    x = 153,690,058.19/13,531.40
  6. Step 6: Final answer
    x = 11,358.03

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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.