Home / 39,903.20-55,064.04-21,998.96

Finding the Fourth Proportional to 39,903.20, 55,064.04 and 21,998.96

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Solution

The fourth proportional to 39,903.20, 55,064.04 and 21,998.96 is: 30,357.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.20 : 55,064.04 = 21,998.96 : x
  2. Step 2: Convert to fraction form
    39,903.20/55,064.04 = 21,998.96/x
  3. Step 3: Cross multiply
    39,903.20x = 55,064.04 × 21,998.96
  4. Step 4: Simplify right side
    39,903.20x = 1,211,351,613.40
  5. Step 5: Solve for x
    x = 1,211,351,613.40/39,903.20
  6. Step 6: Final answer
    x = 30,357.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.