Home / 11,111.45-15,337.65-6,397.61

Finding the Fourth Proportional to 11,111.45, 15,337.65 and 6,397.61

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Solution

The fourth proportional to 11,111.45, 15,337.65 and 6,397.61 is: 8,830.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,111.45 : 15,337.65 = 6,397.61 : x
  2. Step 2: Convert to fraction form
    11,111.45/15,337.65 = 6,397.61/x
  3. Step 3: Cross multiply
    11,111.45x = 15,337.65 × 6,397.61
  4. Step 4: Simplify right side
    11,111.45x = 98,124,226.33
  5. Step 5: Solve for x
    x = 98,124,226.33/11,111.45
  6. Step 6: Final answer
    x = 8,830.92

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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.