Home / 11,421.26-15,759.30-6,385.52

Finding the Fourth Proportional to 11,421.26, 15,759.30 and 6,385.52

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Solution

The fourth proportional to 11,421.26, 15,759.30 and 6,385.52 is: 8,810.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.26 : 15,759.30 = 6,385.52 : x
  2. Step 2: Convert to fraction form
    11,421.26/15,759.30 = 6,385.52/x
  3. Step 3: Cross multiply
    11,421.26x = 15,759.30 × 6,385.52
  4. Step 4: Simplify right side
    11,421.26x = 100,631,341.30
  5. Step 5: Solve for x
    x = 100,631,341.30/11,421.26
  6. Step 6: Final answer
    x = 8,810.88

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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.