Home / 10,143.96-13,998.40-5,667.56

Finding the Fourth Proportional to 10,143.96, 13,998.40 and 5,667.56

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Solution

The fourth proportional to 10,143.96, 13,998.40 and 5,667.56 is: 7,821.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.96 : 13,998.40 = 5,667.56 : x
  2. Step 2: Convert to fraction form
    10,143.96/13,998.40 = 5,667.56/x
  3. Step 3: Cross multiply
    10,143.96x = 13,998.40 × 5,667.56
  4. Step 4: Simplify right side
    10,143.96x = 79,336,771.90
  5. Step 5: Solve for x
    x = 79,336,771.90/10,143.96
  6. Step 6: Final answer
    x = 7,821.08

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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.