Home / 11,516.08-15,876.12-9,740.56

Finding the Fourth Proportional to 11,516.08, 15,876.12 and 9,740.56

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Solution

The fourth proportional to 11,516.08, 15,876.12 and 9,740.56 is: 13,428.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,516.08 : 15,876.12 = 9,740.56 : x
  2. Step 2: Convert to fraction form
    11,516.08/15,876.12 = 9,740.56/x
  3. Step 3: Cross multiply
    11,516.08x = 15,876.12 × 9,740.56
  4. Step 4: Simplify right side
    11,516.08x = 154,642,299.43
  5. Step 5: Solve for x
    x = 154,642,299.43/11,516.08
  6. Step 6: Final answer
    x = 13,428.38

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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.