Home / 11,618.10-15,971.51-9,996.99

Finding the Fourth Proportional to 11,618.10, 15,971.51 and 9,996.99

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Solution

The fourth proportional to 11,618.10, 15,971.51 and 9,996.99 is: 13,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,618.10 : 15,971.51 = 9,996.99 : x
  2. Step 2: Convert to fraction form
    11,618.10/15,971.51 = 9,996.99/x
  3. Step 3: Cross multiply
    11,618.10x = 15,971.51 × 9,996.99
  4. Step 4: Simplify right side
    11,618.10x = 159,666,945.90
  5. Step 5: Solve for x
    x = 159,666,945.90/11,618.10
  6. Step 6: Final answer
    x = 13,742.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.