Home / 18,976.17-28,459.36-5,645.70

Finding the Fourth Proportional to 18,976.17, 28,459.36 and 5,645.70

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Solution

The fourth proportional to 18,976.17, 28,459.36 and 5,645.70 is: 8,467.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,976.17 : 28,459.36 = 5,645.70 : x
  2. Step 2: Convert to fraction form
    18,976.17/28,459.36 = 5,645.70/x
  3. Step 3: Cross multiply
    18,976.17x = 28,459.36 × 5,645.70
  4. Step 4: Simplify right side
    18,976.17x = 160,673,008.75
  5. Step 5: Solve for x
    x = 160,673,008.75/18,976.17
  6. Step 6: Final answer
    x = 8,467.09

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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.