Home / 10,989.76-15,162.16-6,270.72

Finding the Fourth Proportional to 10,989.76, 15,162.16 and 6,270.72

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Solution

The fourth proportional to 10,989.76, 15,162.16 and 6,270.72 is: 8,651.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.76 : 15,162.16 = 6,270.72 : x
  2. Step 2: Convert to fraction form
    10,989.76/15,162.16 = 6,270.72/x
  3. Step 3: Cross multiply
    10,989.76x = 15,162.16 × 6,270.72
  4. Step 4: Simplify right side
    10,989.76x = 95,077,659.96
  5. Step 5: Solve for x
    x = 95,077,659.96/10,989.76
  6. Step 6: Final answer
    x = 8,651.48

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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.