Home / 10,121.26-13,969.12-6,347.68

Finding the Fourth Proportional to 10,121.26, 13,969.12 and 6,347.68

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Solution

The fourth proportional to 10,121.26, 13,969.12 and 6,347.68 is: 8,760.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.26 : 13,969.12 = 6,347.68 : x
  2. Step 2: Convert to fraction form
    10,121.26/13,969.12 = 6,347.68/x
  3. Step 3: Cross multiply
    10,121.26x = 13,969.12 × 6,347.68
  4. Step 4: Simplify right side
    10,121.26x = 88,671,503.64
  5. Step 5: Solve for x
    x = 88,671,503.64/10,121.26
  6. Step 6: Final answer
    x = 8,760.92

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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.