Home / 20,868.23-31,307.82-6,077.28

Finding the Fourth Proportional to 20,868.23, 31,307.82 and 6,077.28

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Solution

The fourth proportional to 20,868.23, 31,307.82 and 6,077.28 is: 9,117.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.23 : 31,307.82 = 6,077.28 : x
  2. Step 2: Convert to fraction form
    20,868.23/31,307.82 = 6,077.28/x
  3. Step 3: Cross multiply
    20,868.23x = 31,307.82 × 6,077.28
  4. Step 4: Simplify right side
    20,868.23x = 190,266,306.84
  5. Step 5: Solve for x
    x = 190,266,306.84/20,868.23
  6. Step 6: Final answer
    x = 9,117.51

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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.