Home / 18,789.60-25,877.16-18,381.36

Finding the Fourth Proportional to 18,789.60, 25,877.16 and 18,381.36

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Solution

The fourth proportional to 18,789.60, 25,877.16 and 18,381.36 is: 25,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.60 : 25,877.16 = 18,381.36 : x
  2. Step 2: Convert to fraction form
    18,789.60/25,877.16 = 18,381.36/x
  3. Step 3: Cross multiply
    18,789.60x = 25,877.16 × 18,381.36
  4. Step 4: Simplify right side
    18,789.60x = 475,657,393.74
  5. Step 5: Solve for x
    x = 475,657,393.74/18,789.60
  6. Step 6: Final answer
    x = 25,314.93

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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.