Home / 20,667.04-28,529.24-13,961.76

Finding the Fourth Proportional to 20,667.04, 28,529.24 and 13,961.76

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Solution

The fourth proportional to 20,667.04, 28,529.24 and 13,961.76 is: 19,273.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.04 : 28,529.24 = 13,961.76 : x
  2. Step 2: Convert to fraction form
    20,667.04/28,529.24 = 13,961.76/x
  3. Step 3: Cross multiply
    20,667.04x = 28,529.24 × 13,961.76
  4. Step 4: Simplify right side
    20,667.04x = 398,318,401.86
  5. Step 5: Solve for x
    x = 398,318,401.86/20,667.04
  6. Step 6: Final answer
    x = 19,273.12

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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.