Home / 20,768.68-31,153.02-6,918.76

Finding the Fourth Proportional to 20,768.68, 31,153.02 and 6,918.76

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Solution

The fourth proportional to 20,768.68, 31,153.02 and 6,918.76 is: 10,378.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.68 : 31,153.02 = 6,918.76 : x
  2. Step 2: Convert to fraction form
    20,768.68/31,153.02 = 6,918.76/x
  3. Step 3: Cross multiply
    20,768.68x = 31,153.02 × 6,918.76
  4. Step 4: Simplify right side
    20,768.68x = 215,540,268.66
  5. Step 5: Solve for x
    x = 215,540,268.66/20,768.68
  6. Step 6: Final answer
    x = 10,378.14

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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.