Home / 10,489.30-14,475.38-5,709.40

Finding the Fourth Proportional to 10,489.30, 14,475.38 and 5,709.40

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Solution

The fourth proportional to 10,489.30, 14,475.38 and 5,709.40 is: 7,879.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.30 : 14,475.38 = 5,709.40 : x
  2. Step 2: Convert to fraction form
    10,489.30/14,475.38 = 5,709.40/x
  3. Step 3: Cross multiply
    10,489.30x = 14,475.38 × 5,709.40
  4. Step 4: Simplify right side
    10,489.30x = 82,645,734.57
  5. Step 5: Solve for x
    x = 82,645,734.57/10,489.30
  6. Step 6: Final answer
    x = 7,879.05

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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.