Home / 20,868.52-31,307.91-6,077.56

Finding the Fourth Proportional to 20,868.52, 31,307.91 and 6,077.56

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Solution

The fourth proportional to 20,868.52, 31,307.91 and 6,077.56 is: 9,117.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.52 : 31,307.91 = 6,077.56 : x
  2. Step 2: Convert to fraction form
    20,868.52/31,307.91 = 6,077.56/x
  3. Step 3: Cross multiply
    20,868.52x = 31,307.91 × 6,077.56
  4. Step 4: Simplify right side
    20,868.52x = 190,275,544.96
  5. Step 5: Solve for x
    x = 190,275,544.96/20,868.52
  6. Step 6: Final answer
    x = 9,117.83

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1.5x scale

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.