Home / 28,140.59-38,839.21-18,081.61

Finding the Fourth Proportional to 28,140.59, 38,839.21 and 18,081.61

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Solution

The fourth proportional to 28,140.59, 38,839.21 and 18,081.61 is: 24,955.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.59 : 38,839.21 = 18,081.61 : x
  2. Step 2: Convert to fraction form
    28,140.59/38,839.21 = 18,081.61/x
  3. Step 3: Cross multiply
    28,140.59x = 38,839.21 × 18,081.61
  4. Step 4: Simplify right side
    28,140.59x = 702,275,305.63
  5. Step 5: Solve for x
    x = 702,275,305.63/28,140.59
  6. Step 6: Final answer
    x = 24,955.95

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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.