Home / 10,091.79-15,142.95-5,717.79

Finding the Fourth Proportional to 10,091.79, 15,142.95 and 5,717.79

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Solution

The fourth proportional to 10,091.79, 15,142.95 and 5,717.79 is: 8,579.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,091.79 : 15,142.95 = 5,717.79 : x
  2. Step 2: Convert to fraction form
    10,091.79/15,142.95 = 5,717.79/x
  3. Step 3: Cross multiply
    10,091.79x = 15,142.95 × 5,717.79
  4. Step 4: Simplify right side
    10,091.79x = 86,584,208.08
  5. Step 5: Solve for x
    x = 86,584,208.08/10,091.79
  6. Step 6: Final answer
    x = 8,579.67

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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.