Home / 8,707.20-13,029.12-4,815.36

Finding the Fourth Proportional to 8,707.20, 13,029.12 and 4,815.36

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Solution

The fourth proportional to 8,707.20, 13,029.12 and 4,815.36 is: 7,205.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.20 : 13,029.12 = 4,815.36 : x
  2. Step 2: Convert to fraction form
    8,707.20/13,029.12 = 4,815.36/x
  3. Step 3: Cross multiply
    8,707.20x = 13,029.12 × 4,815.36
  4. Step 4: Simplify right side
    8,707.20x = 62,739,903.28
  5. Step 5: Solve for x
    x = 62,739,903.28/8,707.20
  6. Step 6: Final answer
    x = 7,205.52

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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.