Home / 31,854.32-43,955.52-18,423.56

Finding the Fourth Proportional to 31,854.32, 43,955.52 and 18,423.56

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Solution

The fourth proportional to 31,854.32, 43,955.52 and 18,423.56 is: 25,422.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,854.32 : 43,955.52 = 18,423.56 : x
  2. Step 2: Convert to fraction form
    31,854.32/43,955.52 = 18,423.56/x
  3. Step 3: Cross multiply
    31,854.32x = 43,955.52 × 18,423.56
  4. Step 4: Simplify right side
    31,854.32x = 809,817,160.05
  5. Step 5: Solve for x
    x = 809,817,160.05/31,854.32
  6. Step 6: Final answer
    x = 25,422.52

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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.