Home / 10,320.75-15,478.70-3,298.86

Finding the Fourth Proportional to 10,320.75, 15,478.70 and 3,298.86

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Solution

The fourth proportional to 10,320.75, 15,478.70 and 3,298.86 is: 4,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,320.75 : 15,478.70 = 3,298.86 : x
  2. Step 2: Convert to fraction form
    10,320.75/15,478.70 = 3,298.86/x
  3. Step 3: Cross multiply
    10,320.75x = 15,478.70 × 3,298.86
  4. Step 4: Simplify right side
    10,320.75x = 51,062,047.79
  5. Step 5: Solve for x
    x = 51,062,047.79/10,320.75
  6. Step 6: Final answer
    x = 4,947.51

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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.