Home / 11,152.77-15,390.66-6,436.95

Finding the Fourth Proportional to 11,152.77, 15,390.66 and 6,436.95

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Solution

The fourth proportional to 11,152.77, 15,390.66 and 6,436.95 is: 8,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.77 : 15,390.66 = 6,436.95 : x
  2. Step 2: Convert to fraction form
    11,152.77/15,390.66 = 6,436.95/x
  3. Step 3: Cross multiply
    11,152.77x = 15,390.66 × 6,436.95
  4. Step 4: Simplify right side
    11,152.77x = 99,068,908.89
  5. Step 5: Solve for x
    x = 99,068,908.89/11,152.77
  6. Step 6: Final answer
    x = 8,882.90

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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.