Home / 11,890.80-17,836.20-3,572.10

Finding the Fourth Proportional to 11,890.80, 17,836.20 and 3,572.10

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Solution

The fourth proportional to 11,890.80, 17,836.20 and 3,572.10 is: 5,358.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.80 : 17,836.20 = 3,572.10 : x
  2. Step 2: Convert to fraction form
    11,890.80/17,836.20 = 3,572.10/x
  3. Step 3: Cross multiply
    11,890.80x = 17,836.20 × 3,572.10
  4. Step 4: Simplify right side
    11,890.80x = 63,712,690.02
  5. Step 5: Solve for x
    x = 63,712,690.02/11,890.80
  6. Step 6: Final answer
    x = 5,358.15

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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.