Home / 20,703.12-31,070.24-15,170.56

Finding the Fourth Proportional to 20,703.12, 31,070.24 and 15,170.56

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Solution

The fourth proportional to 20,703.12, 31,070.24 and 15,170.56 is: 22,767.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.12 : 31,070.24 = 15,170.56 : x
  2. Step 2: Convert to fraction form
    20,703.12/31,070.24 = 15,170.56/x
  3. Step 3: Cross multiply
    20,703.12x = 31,070.24 × 15,170.56
  4. Step 4: Simplify right side
    20,703.12x = 471,352,940.13
  5. Step 5: Solve for x
    x = 471,352,940.13/20,703.12
  6. Step 6: Final answer
    x = 22,767.24

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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.