Home / 28,153.28-38,845.71-18,080.33

Finding the Fourth Proportional to 28,153.28, 38,845.71 and 18,080.33

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Solution

The fourth proportional to 28,153.28, 38,845.71 and 18,080.33 is: 24,947.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153.28 : 38,845.71 = 18,080.33 : x
  2. Step 2: Convert to fraction form
    28,153.28/38,845.71 = 18,080.33/x
  3. Step 3: Cross multiply
    28,153.28x = 38,845.71 × 18,080.33
  4. Step 4: Simplify right side
    28,153.28x = 702,343,061.66
  5. Step 5: Solve for x
    x = 702,343,061.66/28,153.28
  6. Step 6: Final answer
    x = 24,947.11

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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.