Home / 25,877.88-38,816.82-20,659.32

Finding the Fourth Proportional to 25,877.88, 38,816.82 and 20,659.32

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Solution

The fourth proportional to 25,877.88, 38,816.82 and 20,659.32 is: 30,988.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,877.88 : 38,816.82 = 20,659.32 : x
  2. Step 2: Convert to fraction form
    25,877.88/38,816.82 = 20,659.32/x
  3. Step 3: Cross multiply
    25,877.88x = 38,816.82 × 20,659.32
  4. Step 4: Simplify right side
    25,877.88x = 801,929,105.76
  5. Step 5: Solve for x
    x = 801,929,105.76/25,877.88
  6. Step 6: Final answer
    x = 30,988.98

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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.