Home / 13,862.40-20,793.60-8,671.20

Finding the Fourth Proportional to 13,862.40, 20,793.60 and 8,671.20

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Solution

The fourth proportional to 13,862.40, 20,793.60 and 8,671.20 is: 13,006.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.40 : 20,793.60 = 8,671.20 : x
  2. Step 2: Convert to fraction form
    13,862.40/20,793.60 = 8,671.20/x
  3. Step 3: Cross multiply
    13,862.40x = 20,793.60 × 8,671.20
  4. Step 4: Simplify right side
    13,862.40x = 180,305,464.32
  5. Step 5: Solve for x
    x = 180,305,464.32/13,862.40
  6. Step 6: Final answer
    x = 13,006.80

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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.