Home / 10,661.48-15,971.43-6,491.15

Finding the Fourth Proportional to 10,661.48, 15,971.43 and 6,491.15

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Solution

The fourth proportional to 10,661.48, 15,971.43 and 6,491.15 is: 9,724.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.48 : 15,971.43 = 6,491.15 : x
  2. Step 2: Convert to fraction form
    10,661.48/15,971.43 = 6,491.15/x
  3. Step 3: Cross multiply
    10,661.48x = 15,971.43 × 6,491.15
  4. Step 4: Simplify right side
    10,661.48x = 103,672,867.99
  5. Step 5: Solve for x
    x = 103,672,867.99/10,661.48
  6. Step 6: Final answer
    x = 9,724.06

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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.