Home / 31,689.60-43,740.24-18,265.20

Finding the Fourth Proportional to 31,689.60, 43,740.24 and 18,265.20

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Solution

The fourth proportional to 31,689.60, 43,740.24 and 18,265.20 is: 25,210.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.60 : 43,740.24 = 18,265.20 : x
  2. Step 2: Convert to fraction form
    31,689.60/43,740.24 = 18,265.20/x
  3. Step 3: Cross multiply
    31,689.60x = 43,740.24 × 18,265.20
  4. Step 4: Simplify right side
    31,689.60x = 798,924,231.65
  5. Step 5: Solve for x
    x = 798,924,231.65/31,689.60
  6. Step 6: Final answer
    x = 25,210.93

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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.