Home / 11,434.32-15,779.25-6,398.55

Finding the Fourth Proportional to 11,434.32, 15,779.25 and 6,398.55

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Solution

The fourth proportional to 11,434.32, 15,779.25 and 6,398.55 is: 8,829.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,434.32 : 15,779.25 = 6,398.55 : x
  2. Step 2: Convert to fraction form
    11,434.32/15,779.25 = 6,398.55/x
  3. Step 3: Cross multiply
    11,434.32x = 15,779.25 × 6,398.55
  4. Step 4: Simplify right side
    11,434.32x = 100,964,320.09
  5. Step 5: Solve for x
    x = 100,964,320.09/11,434.32
  6. Step 6: Final answer
    x = 8,829.94

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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.