Home / 11,545.40-17,318.07-2,780.30

Finding the Fourth Proportional to 11,545.40, 17,318.07 and 2,780.30

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Solution

The fourth proportional to 11,545.40, 17,318.07 and 2,780.30 is: 4,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,545.40 : 17,318.07 = 2,780.30 : x
  2. Step 2: Convert to fraction form
    11,545.40/17,318.07 = 2,780.30/x
  3. Step 3: Cross multiply
    11,545.40x = 17,318.07 × 2,780.30
  4. Step 4: Simplify right side
    11,545.40x = 48,149,430.02
  5. Step 5: Solve for x
    x = 48,149,430.02/11,545.40
  6. Step 6: Final answer
    x = 4,170.44

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1.5x scale

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.