Home / 18,342.75-25,312.91-9,959.25

Finding the Fourth Proportional to 18,342.75, 25,312.91 and 9,959.25

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Solution

The fourth proportional to 18,342.75, 25,312.91 and 9,959.25 is: 13,743.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.75 : 25,312.91 = 9,959.25 : x
  2. Step 2: Convert to fraction form
    18,342.75/25,312.91 = 9,959.25/x
  3. Step 3: Cross multiply
    18,342.75x = 25,312.91 × 9,959.25
  4. Step 4: Simplify right side
    18,342.75x = 252,097,644.04
  5. Step 5: Solve for x
    x = 252,097,644.04/18,342.75
  6. Step 6: Final answer
    x = 13,743.72

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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.