Home / 10,995.30-16,455.15-6,615.90

Finding the Fourth Proportional to 10,995.30, 16,455.15 and 6,615.90

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Solution

The fourth proportional to 10,995.30, 16,455.15 and 6,615.90 is: 9,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,995.30 : 16,455.15 = 6,615.90 : x
  2. Step 2: Convert to fraction form
    10,995.30/16,455.15 = 6,615.90/x
  3. Step 3: Cross multiply
    10,995.30x = 16,455.15 × 6,615.90
  4. Step 4: Simplify right side
    10,995.30x = 108,865,626.89
  5. Step 5: Solve for x
    x = 108,865,626.89/10,995.30
  6. Step 6: Final answer
    x = 9,901.11

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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.