Home / 31,291.47-43,182.68-18,713.79

Finding the Fourth Proportional to 31,291.47, 43,182.68 and 18,713.79

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Solution

The fourth proportional to 31,291.47, 43,182.68 and 18,713.79 is: 25,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,291.47 : 43,182.68 = 18,713.79 : x
  2. Step 2: Convert to fraction form
    31,291.47/43,182.68 = 18,713.79/x
  3. Step 3: Cross multiply
    31,291.47x = 43,182.68 × 18,713.79
  4. Step 4: Simplify right side
    31,291.47x = 808,111,511.59
  5. Step 5: Solve for x
    x = 808,111,511.59/31,291.47
  6. Step 6: Final answer
    x = 25,825.30

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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.