Home / 10,355.80-15,532.30-4,120.40

Finding the Fourth Proportional to 10,355.80, 15,532.30 and 4,120.40

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Solution

The fourth proportional to 10,355.80, 15,532.30 and 4,120.40 is: 6,180.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.80 : 15,532.30 = 4,120.40 : x
  2. Step 2: Convert to fraction form
    10,355.80/15,532.30 = 4,120.40/x
  3. Step 3: Cross multiply
    10,355.80x = 15,532.30 × 4,120.40
  4. Step 4: Simplify right side
    10,355.80x = 63,999,288.92
  5. Step 5: Solve for x
    x = 63,999,288.92/10,355.80
  6. Step 6: Final answer
    x = 6,180.04

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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.