Home / 20,756.72-31,133.16-8,273.42

Finding the Fourth Proportional to 20,756.72, 31,133.16 and 8,273.42

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Solution

The fourth proportional to 20,756.72, 31,133.16 and 8,273.42 is: 12,409.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.72 : 31,133.16 = 8,273.42 : x
  2. Step 2: Convert to fraction form
    20,756.72/31,133.16 = 8,273.42/x
  3. Step 3: Cross multiply
    20,756.72x = 31,133.16 × 8,273.42
  4. Step 4: Simplify right side
    20,756.72x = 257,577,708.61
  5. Step 5: Solve for x
    x = 257,577,708.61/20,756.72
  6. Step 6: Final answer
    x = 12,409.36

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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.