Home / 36,447.60-54,671.40-20,854.20

Finding the Fourth Proportional to 36,447.60, 54,671.40 and 20,854.20

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Solution

The fourth proportional to 36,447.60, 54,671.40 and 20,854.20 is: 31,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,447.60 : 54,671.40 = 20,854.20 : x
  2. Step 2: Convert to fraction form
    36,447.60/54,671.40 = 20,854.20/x
  3. Step 3: Cross multiply
    36,447.60x = 54,671.40 × 20,854.20
  4. Step 4: Simplify right side
    36,447.60x = 1,140,128,309.88
  5. Step 5: Solve for x
    x = 1,140,128,309.88/36,447.60
  6. Step 6: Final answer
    x = 31,281.30

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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.