Home / 43,712.60-65,520.30-18,748.40

Finding the Fourth Proportional to 43,712.60, 65,520.30 and 18,748.40

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Solution

The fourth proportional to 43,712.60, 65,520.30 and 18,748.40 is: 28,101.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,712.60 : 65,520.30 = 18,748.40 : x
  2. Step 2: Convert to fraction form
    43,712.60/65,520.30 = 18,748.40/x
  3. Step 3: Cross multiply
    43,712.60x = 65,520.30 × 18,748.40
  4. Step 4: Simplify right side
    43,712.60x = 1,228,400,792.52
  5. Step 5: Solve for x
    x = 1,228,400,792.52/43,712.60
  6. Step 6: Final answer
    x = 28,101.76

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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.