Home / 20,777.12-31,146.83-8,294.52

Finding the Fourth Proportional to 20,777.12, 31,146.83 and 8,294.52

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Solution

The fourth proportional to 20,777.12, 31,146.83 and 8,294.52 is: 12,434.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.12 : 31,146.83 = 8,294.52 : x
  2. Step 2: Convert to fraction form
    20,777.12/31,146.83 = 8,294.52/x
  3. Step 3: Cross multiply
    20,777.12x = 31,146.83 × 8,294.52
  4. Step 4: Simplify right side
    20,777.12x = 258,348,004.37
  5. Step 5: Solve for x
    x = 258,348,004.37/20,777.12
  6. Step 6: Final answer
    x = 12,434.25

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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.