Home / 20,948.64-31,428.36-6,158.04

Finding the Fourth Proportional to 20,948.64, 31,428.36 and 6,158.04

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Solution

The fourth proportional to 20,948.64, 31,428.36 and 6,158.04 is: 9,238.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.64 : 31,428.36 = 6,158.04 : x
  2. Step 2: Convert to fraction form
    20,948.64/31,428.36 = 6,158.04/x
  3. Step 3: Cross multiply
    20,948.64x = 31,428.36 × 6,158.04
  4. Step 4: Simplify right side
    20,948.64x = 193,537,098.01
  5. Step 5: Solve for x
    x = 193,537,098.01/20,948.64
  6. Step 6: Final answer
    x = 9,238.65

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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.