Home / 31,217.13-43,079.73-19,884.20

Finding the Fourth Proportional to 31,217.13, 43,079.73 and 19,884.20

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Solution

The fourth proportional to 31,217.13, 43,079.73 and 19,884.20 is: 27,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,217.13 : 43,079.73 = 19,884.20 : x
  2. Step 2: Convert to fraction form
    31,217.13/43,079.73 = 19,884.20/x
  3. Step 3: Cross multiply
    31,217.13x = 43,079.73 × 19,884.20
  4. Step 4: Simplify right side
    31,217.13x = 856,605,967.27
  5. Step 5: Solve for x
    x = 856,605,967.27/31,217.13
  6. Step 6: Final answer
    x = 27,440.25

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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.