Home / 10,646.33-15,979.34-5,385.06

Finding the Fourth Proportional to 10,646.33, 15,979.34 and 5,385.06

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Solution

The fourth proportional to 10,646.33, 15,979.34 and 5,385.06 is: 8,082.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,646.33 : 15,979.34 = 5,385.06 : x
  2. Step 2: Convert to fraction form
    10,646.33/15,979.34 = 5,385.06/x
  3. Step 3: Cross multiply
    10,646.33x = 15,979.34 × 5,385.06
  4. Step 4: Simplify right side
    10,646.33x = 86,049,718.12
  5. Step 5: Solve for x
    x = 86,049,718.12/10,646.33
  6. Step 6: Final answer
    x = 8,082.57

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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.