Home / 10,429.20-15,639.04-4,503.28

Finding the Fourth Proportional to 10,429.20, 15,639.04 and 4,503.28

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Solution

The fourth proportional to 10,429.20, 15,639.04 and 4,503.28 is: 6,752.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.20 : 15,639.04 = 4,503.28 : x
  2. Step 2: Convert to fraction form
    10,429.20/15,639.04 = 4,503.28/x
  3. Step 3: Cross multiply
    10,429.20x = 15,639.04 × 4,503.28
  4. Step 4: Simplify right side
    10,429.20x = 70,426,976.05
  5. Step 5: Solve for x
    x = 70,426,976.05/10,429.20
  6. Step 6: Final answer
    x = 6,752.86

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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.