Home / 11,421.34-15,760.25-6,385.04

Finding the Fourth Proportional to 11,421.34, 15,760.25 and 6,385.04

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Solution

The fourth proportional to 11,421.34, 15,760.25 and 6,385.04 is: 8,810.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.34 : 15,760.25 = 6,385.04 : x
  2. Step 2: Convert to fraction form
    11,421.34/15,760.25 = 6,385.04/x
  3. Step 3: Cross multiply
    11,421.34x = 15,760.25 × 6,385.04
  4. Step 4: Simplify right side
    11,421.34x = 100,629,826.66
  5. Step 5: Solve for x
    x = 100,629,826.66/11,421.34
  6. Step 6: Final answer
    x = 8,810.68

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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.