Home / 10,639.19-15,961.08-5,305.28

Finding the Fourth Proportional to 10,639.19, 15,961.08 and 5,305.28

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Solution

The fourth proportional to 10,639.19, 15,961.08 and 5,305.28 is: 7,959.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.19 : 15,961.08 = 5,305.28 : x
  2. Step 2: Convert to fraction form
    10,639.19/15,961.08 = 5,305.28/x
  3. Step 3: Cross multiply
    10,639.19x = 15,961.08 × 5,305.28
  4. Step 4: Simplify right side
    10,639.19x = 84,677,998.50
  5. Step 5: Solve for x
    x = 84,677,998.50/10,639.19
  6. Step 6: Final answer
    x = 7,959.06

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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.