Home / 20,298.82-30,448.39-7,148.18

Finding the Fourth Proportional to 20,298.82, 30,448.39 and 7,148.18

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Solution

The fourth proportional to 20,298.82, 30,448.39 and 7,148.18 is: 10,722.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.82 : 30,448.39 = 7,148.18 : x
  2. Step 2: Convert to fraction form
    20,298.82/30,448.39 = 7,148.18/x
  3. Step 3: Cross multiply
    20,298.82x = 30,448.39 × 7,148.18
  4. Step 4: Simplify right side
    20,298.82x = 217,650,572.43
  5. Step 5: Solve for x
    x = 217,650,572.43/20,298.82
  6. Step 6: Final answer
    x = 10,722.33

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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.