Home / 18,853.80-28,258.70-13,877.36

Finding the Fourth Proportional to 18,853.80, 28,258.70 and 13,877.36

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Solution

The fourth proportional to 18,853.80, 28,258.70 and 13,877.36 is: 20,799.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.80 : 28,258.70 = 13,877.36 : x
  2. Step 2: Convert to fraction form
    18,853.80/28,258.70 = 13,877.36/x
  3. Step 3: Cross multiply
    18,853.80x = 28,258.70 × 13,877.36
  4. Step 4: Simplify right side
    18,853.80x = 392,156,154.29
  5. Step 5: Solve for x
    x = 392,156,154.29/18,853.80
  6. Step 6: Final answer
    x = 20,799.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.