Home / 32,987.28-45,517.50-18,837.12

Finding the Fourth Proportional to 32,987.28, 45,517.50 and 18,837.12

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Solution

The fourth proportional to 32,987.28, 45,517.50 and 18,837.12 is: 25,992.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,987.28 : 45,517.50 = 18,837.12 : x
  2. Step 2: Convert to fraction form
    32,987.28/45,517.50 = 18,837.12/x
  3. Step 3: Cross multiply
    32,987.28x = 45,517.50 × 18,837.12
  4. Step 4: Simplify right side
    32,987.28x = 857,418,609.60
  5. Step 5: Solve for x
    x = 857,418,609.60/32,987.28
  6. Step 6: Final answer
    x = 25,992.40

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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.