Home / 31,560.57-43,567.89-20,080.20

Finding the Fourth Proportional to 31,560.57, 43,567.89 and 20,080.20

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Solution

The fourth proportional to 31,560.57, 43,567.89 and 20,080.20 is: 27,719.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,560.57 : 43,567.89 = 20,080.20 : x
  2. Step 2: Convert to fraction form
    31,560.57/43,567.89 = 20,080.20/x
  3. Step 3: Cross multiply
    31,560.57x = 43,567.89 × 20,080.20
  4. Step 4: Simplify right side
    31,560.57x = 874,851,944.78
  5. Step 5: Solve for x
    x = 874,851,944.78/31,560.57
  6. Step 6: Final answer
    x = 27,719.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.