Home / 11,117.61-15,340.03-6,639.73

Finding the Fourth Proportional to 11,117.61, 15,340.03 and 6,639.73

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Solution

The fourth proportional to 11,117.61, 15,340.03 and 6,639.73 is: 9,161.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.61 : 15,340.03 = 6,639.73 : x
  2. Step 2: Convert to fraction form
    11,117.61/15,340.03 = 6,639.73/x
  3. Step 3: Cross multiply
    11,117.61x = 15,340.03 × 6,639.73
  4. Step 4: Simplify right side
    11,117.61x = 101,853,657.39
  5. Step 5: Solve for x
    x = 101,853,657.39/11,117.61
  6. Step 6: Final answer
    x = 9,161.47

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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.