Home / 10,102.77-13,943.21-6,387.57

Finding the Fourth Proportional to 10,102.77, 13,943.21 and 6,387.57

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Solution

The fourth proportional to 10,102.77, 13,943.21 and 6,387.57 is: 8,815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,102.77 : 13,943.21 = 6,387.57 : x
  2. Step 2: Convert to fraction form
    10,102.77/13,943.21 = 6,387.57/x
  3. Step 3: Cross multiply
    10,102.77x = 13,943.21 × 6,387.57
  4. Step 4: Simplify right side
    10,102.77x = 89,063,197.96
  5. Step 5: Solve for x
    x = 89,063,197.96/10,102.77
  6. Step 6: Final answer
    x = 8,815.72

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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.