Home / 20,851.30-31,278.93-5,858.38

Finding the Fourth Proportional to 20,851.30, 31,278.93 and 5,858.38

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Solution

The fourth proportional to 20,851.30, 31,278.93 and 5,858.38 is: 8,788.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.30 : 31,278.93 = 5,858.38 : x
  2. Step 2: Convert to fraction form
    20,851.30/31,278.93 = 5,858.38/x
  3. Step 3: Cross multiply
    20,851.30x = 31,278.93 × 5,858.38
  4. Step 4: Simplify right side
    20,851.30x = 183,243,857.93
  5. Step 5: Solve for x
    x = 183,243,857.93/20,851.30
  6. Step 6: Final answer
    x = 8,788.13

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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.