Home / 43,397.20-65,120.39-17,120.40

Finding the Fourth Proportional to 43,397.20, 65,120.39 and 17,120.40

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Solution

The fourth proportional to 43,397.20, 65,120.39 and 17,120.40 is: 25,690.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,397.20 : 65,120.39 = 17,120.40 : x
  2. Step 2: Convert to fraction form
    43,397.20/65,120.39 = 17,120.40/x
  3. Step 3: Cross multiply
    43,397.20x = 65,120.39 × 17,120.40
  4. Step 4: Simplify right side
    43,397.20x = 1,114,886,859.35
  5. Step 5: Solve for x
    x = 1,114,886,859.35/43,397.20
  6. Step 6: Final answer
    x = 25,690.29

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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.