Home / 20,868.47-31,302.75-6,077.75

Finding the Fourth Proportional to 20,868.47, 31,302.75 and 6,077.75

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Solution

The fourth proportional to 20,868.47, 31,302.75 and 6,077.75 is: 9,116.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.47 : 31,302.75 = 6,077.75 : x
  2. Step 2: Convert to fraction form
    20,868.47/31,302.75 = 6,077.75/x
  3. Step 3: Cross multiply
    20,868.47x = 31,302.75 × 6,077.75
  4. Step 4: Simplify right side
    20,868.47x = 190,250,132.30
  5. Step 5: Solve for x
    x = 190,250,132.30/20,868.47
  6. Step 6: Final answer
    x = 9,116.63

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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.