Home / 10,945.48-16,389.87-7,971.70

Finding the Fourth Proportional to 10,945.48, 16,389.87 and 7,971.70

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Solution

The fourth proportional to 10,945.48, 16,389.87 and 7,971.70 is: 11,936.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,945.48 : 16,389.87 = 7,971.70 : x
  2. Step 2: Convert to fraction form
    10,945.48/16,389.87 = 7,971.70/x
  3. Step 3: Cross multiply
    10,945.48x = 16,389.87 × 7,971.70
  4. Step 4: Simplify right side
    10,945.48x = 130,655,126.68
  5. Step 5: Solve for x
    x = 130,655,126.68/10,945.48
  6. Step 6: Final answer
    x = 11,936.90

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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.