Home / 20,669.28-31,001.76-5,878.08

Finding the Fourth Proportional to 20,669.28, 31,001.76 and 5,878.08

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Solution

The fourth proportional to 20,669.28, 31,001.76 and 5,878.08 is: 8,816.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.28 : 31,001.76 = 5,878.08 : x
  2. Step 2: Convert to fraction form
    20,669.28/31,001.76 = 5,878.08/x
  3. Step 3: Cross multiply
    20,669.28x = 31,001.76 × 5,878.08
  4. Step 4: Simplify right side
    20,669.28x = 182,230,825.42
  5. Step 5: Solve for x
    x = 182,230,825.42/20,669.28
  6. Step 6: Final answer
    x = 8,816.51

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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.