Home / 10,992.84-15,172.88-6,279.86

Finding the Fourth Proportional to 10,992.84, 15,172.88 and 6,279.86

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Solution

The fourth proportional to 10,992.84, 15,172.88 and 6,279.86 is: 8,667.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.84 : 15,172.88 = 6,279.86 : x
  2. Step 2: Convert to fraction form
    10,992.84/15,172.88 = 6,279.86/x
  3. Step 3: Cross multiply
    10,992.84x = 15,172.88 × 6,279.86
  4. Step 4: Simplify right side
    10,992.84x = 95,283,454.93
  5. Step 5: Solve for x
    x = 95,283,454.93/10,992.84
  6. Step 6: Final answer
    x = 8,667.77

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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.