Home / 31,781.36-43,851.68-17,631.20

Finding the Fourth Proportional to 31,781.36, 43,851.68 and 17,631.20

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Solution

The fourth proportional to 31,781.36, 43,851.68 and 17,631.20 is: 24,327.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.36 : 43,851.68 = 17,631.20 : x
  2. Step 2: Convert to fraction form
    31,781.36/43,851.68 = 17,631.20/x
  3. Step 3: Cross multiply
    31,781.36x = 43,851.68 × 17,631.20
  4. Step 4: Simplify right side
    31,781.36x = 773,157,740.42
  5. Step 5: Solve for x
    x = 773,157,740.42/31,781.36
  6. Step 6: Final answer
    x = 24,327.40

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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.