Home / 9,863.88-13,612.23-5,387.55

Finding the Fourth Proportional to 9,863.88, 13,612.23 and 5,387.55

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Solution

The fourth proportional to 9,863.88, 13,612.23 and 5,387.55 is: 7,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,863.88 : 13,612.23 = 5,387.55 : x
  2. Step 2: Convert to fraction form
    9,863.88/13,612.23 = 5,387.55/x
  3. Step 3: Cross multiply
    9,863.88x = 13,612.23 × 5,387.55
  4. Step 4: Simplify right side
    9,863.88x = 73,336,569.74
  5. Step 5: Solve for x
    x = 73,336,569.74/9,863.88
  6. Step 6: Final answer
    x = 7,434.86

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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.