Home / 10,990.67-15,168.21-6,275.66

Finding the Fourth Proportional to 10,990.67, 15,168.21 and 6,275.66

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Solution

The fourth proportional to 10,990.67, 15,168.21 and 6,275.66 is: 8,661.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.67 : 15,168.21 = 6,275.66 : x
  2. Step 2: Convert to fraction form
    10,990.67/15,168.21 = 6,275.66/x
  3. Step 3: Cross multiply
    10,990.67x = 15,168.21 × 6,275.66
  4. Step 4: Simplify right side
    10,990.67x = 95,190,528.77
  5. Step 5: Solve for x
    x = 95,190,528.77/10,990.67
  6. Step 6: Final answer
    x = 8,661.03

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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.