Home / 10,971.29-15,139.68-6,191.98

Finding the Fourth Proportional to 10,971.29, 15,139.68 and 6,191.98

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Solution

The fourth proportional to 10,971.29, 15,139.68 and 6,191.98 is: 8,544.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,971.29 : 15,139.68 = 6,191.98 : x
  2. Step 2: Convert to fraction form
    10,971.29/15,139.68 = 6,191.98/x
  3. Step 3: Cross multiply
    10,971.29x = 15,139.68 × 6,191.98
  4. Step 4: Simplify right side
    10,971.29x = 93,744,595.77
  5. Step 5: Solve for x
    x = 93,744,595.77/10,971.29
  6. Step 6: Final answer
    x = 8,544.54

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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.