Home / 20,750.18-31,109.32-10,744.20

Finding the Fourth Proportional to 20,750.18, 31,109.32 and 10,744.20

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Solution

The fourth proportional to 20,750.18, 31,109.32 and 10,744.20 is: 16,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.18 : 31,109.32 = 10,744.20 : x
  2. Step 2: Convert to fraction form
    20,750.18/31,109.32 = 10,744.20/x
  3. Step 3: Cross multiply
    20,750.18x = 31,109.32 × 10,744.20
  4. Step 4: Simplify right side
    20,750.18x = 334,244,769.37
  5. Step 5: Solve for x
    x = 334,244,769.37/20,750.18
  6. Step 6: Final answer
    x = 16,108.04

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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.