Home / 11,002.81-15,189.11-6,971.65

Finding the Fourth Proportional to 11,002.81, 15,189.11 and 6,971.65

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Solution

The fourth proportional to 11,002.81, 15,189.11 and 6,971.65 is: 9,624.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,002.81 : 15,189.11 = 6,971.65 : x
  2. Step 2: Convert to fraction form
    11,002.81/15,189.11 = 6,971.65/x
  3. Step 3: Cross multiply
    11,002.81x = 15,189.11 × 6,971.65
  4. Step 4: Simplify right side
    11,002.81x = 105,893,158.73
  5. Step 5: Solve for x
    x = 105,893,158.73/11,002.81
  6. Step 6: Final answer
    x = 9,624.19

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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.