Home / 21,041.76-31,552.92-7,884.72

Finding the Fourth Proportional to 21,041.76, 31,552.92 and 7,884.72

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Solution

The fourth proportional to 21,041.76, 31,552.92 and 7,884.72 is: 11,823.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.76 : 31,552.92 = 7,884.72 : x
  2. Step 2: Convert to fraction form
    21,041.76/31,552.92 = 7,884.72/x
  3. Step 3: Cross multiply
    21,041.76x = 31,552.92 × 7,884.72
  4. Step 4: Simplify right side
    21,041.76x = 248,785,939.38
  5. Step 5: Solve for x
    x = 248,785,939.38/21,041.76
  6. Step 6: Final answer
    x = 11,823.44

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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.