Home / 10,903.20-16,354.80-4,759.20

Finding the Fourth Proportional to 10,903.20, 16,354.80 and 4,759.20

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Solution

The fourth proportional to 10,903.20, 16,354.80 and 4,759.20 is: 7,138.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,903.20 : 16,354.80 = 4,759.20 : x
  2. Step 2: Convert to fraction form
    10,903.20/16,354.80 = 4,759.20/x
  3. Step 3: Cross multiply
    10,903.20x = 16,354.80 × 4,759.20
  4. Step 4: Simplify right side
    10,903.20x = 77,835,764.16
  5. Step 5: Solve for x
    x = 77,835,764.16/10,903.20
  6. Step 6: Final answer
    x = 7,138.80

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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.