Home / 20,758.10-28,650.76-13,202.96

Finding the Fourth Proportional to 20,758.10, 28,650.76 and 13,202.96

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Solution

The fourth proportional to 20,758.10, 28,650.76 and 13,202.96 is: 18,223.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.10 : 28,650.76 = 13,202.96 : x
  2. Step 2: Convert to fraction form
    20,758.10/28,650.76 = 13,202.96/x
  3. Step 3: Cross multiply
    20,758.10x = 28,650.76 × 13,202.96
  4. Step 4: Simplify right side
    20,758.10x = 378,274,838.25
  5. Step 5: Solve for x
    x = 378,274,838.25/20,758.10
  6. Step 6: Final answer
    x = 18,223.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.