Home / 10,661.18-15,990.54-2,869.38

Finding the Fourth Proportional to 10,661.18, 15,990.54 and 2,869.38

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Solution

The fourth proportional to 10,661.18, 15,990.54 and 2,869.38 is: 4,303.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.18 : 15,990.54 = 2,869.38 : x
  2. Step 2: Convert to fraction form
    10,661.18/15,990.54 = 2,869.38/x
  3. Step 3: Cross multiply
    10,661.18x = 15,990.54 × 2,869.38
  4. Step 4: Simplify right side
    10,661.18x = 45,882,935.67
  5. Step 5: Solve for x
    x = 45,882,935.67/10,661.18
  6. Step 6: Final answer
    x = 4,303.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.