Home / 25,918.40-38,877.60-20,734.40

Finding the Fourth Proportional to 25,918.40, 38,877.60 and 20,734.40

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Solution

The fourth proportional to 25,918.40, 38,877.60 and 20,734.40 is: 31,101.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,918.40 : 38,877.60 = 20,734.40 : x
  2. Step 2: Convert to fraction form
    25,918.40/38,877.60 = 20,734.40/x
  3. Step 3: Cross multiply
    25,918.40x = 38,877.60 × 20,734.40
  4. Step 4: Simplify right side
    25,918.40x = 806,103,709.44
  5. Step 5: Solve for x
    x = 806,103,709.44/25,918.40
  6. Step 6: Final answer
    x = 31,101.60

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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.