Home / 25,878.60-38,760.30-20,003.40

Finding the Fourth Proportional to 25,878.60, 38,760.30 and 20,003.40

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Solution

The fourth proportional to 25,878.60, 38,760.30 and 20,003.40 is: 29,960.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,878.60 : 38,760.30 = 20,003.40 : x
  2. Step 2: Convert to fraction form
    25,878.60/38,760.30 = 20,003.40/x
  3. Step 3: Cross multiply
    25,878.60x = 38,760.30 × 20,003.40
  4. Step 4: Simplify right side
    25,878.60x = 775,337,785.02
  5. Step 5: Solve for x
    x = 775,337,785.02/25,878.60
  6. Step 6: Final answer
    x = 29,960.58

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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.