Home / 20,850.86-31,273.02-7,700.15

Finding the Fourth Proportional to 20,850.86, 31,273.02 and 7,700.15

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Solution

The fourth proportional to 20,850.86, 31,273.02 and 7,700.15 is: 11,549.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.86 : 31,273.02 = 7,700.15 : x
  2. Step 2: Convert to fraction form
    20,850.86/31,273.02 = 7,700.15/x
  3. Step 3: Cross multiply
    20,850.86x = 31,273.02 × 7,700.15
  4. Step 4: Simplify right side
    20,850.86x = 240,806,944.95
  5. Step 5: Solve for x
    x = 240,806,944.95/20,850.86
  6. Step 6: Final answer
    x = 11,549.02

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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.