Home / 31,689.60-43,732.68-18,259.80

Finding the Fourth Proportional to 31,689.60, 43,732.68 and 18,259.80

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Solution

The fourth proportional to 31,689.60, 43,732.68 and 18,259.80 is: 25,199.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.60 : 43,732.68 = 18,259.80 : x
  2. Step 2: Convert to fraction form
    31,689.60/43,732.68 = 18,259.80/x
  3. Step 3: Cross multiply
    31,689.60x = 43,732.68 × 18,259.80
  4. Step 4: Simplify right side
    31,689.60x = 798,549,990.26
  5. Step 5: Solve for x
    x = 798,549,990.26/31,689.60
  6. Step 6: Final answer
    x = 25,199.12

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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.