Home / 15,839.64-21,853.37-9,125.10

Finding the Fourth Proportional to 15,839.64, 21,853.37 and 9,125.10

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Solution

The fourth proportional to 15,839.64, 21,853.37 and 9,125.10 is: 12,589.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.64 : 21,853.37 = 9,125.10 : x
  2. Step 2: Convert to fraction form
    15,839.64/21,853.37 = 9,125.10/x
  3. Step 3: Cross multiply
    15,839.64x = 21,853.37 × 9,125.10
  4. Step 4: Simplify right side
    15,839.64x = 199,414,059.01
  5. Step 5: Solve for x
    x = 199,414,059.01/15,839.64
  6. Step 6: Final answer
    x = 12,589.55

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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.