Home / 39,903.42-55,066.50-21,998.36

Finding the Fourth Proportional to 39,903.42, 55,066.50 and 21,998.36

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Solution

The fourth proportional to 39,903.42, 55,066.50 and 21,998.36 is: 30,357.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.42 : 55,066.50 = 21,998.36 : x
  2. Step 2: Convert to fraction form
    39,903.42/55,066.50 = 21,998.36/x
  3. Step 3: Cross multiply
    39,903.42x = 55,066.50 × 21,998.36
  4. Step 4: Simplify right side
    39,903.42x = 1,211,372,690.94
  5. Step 5: Solve for x
    x = 1,211,372,690.94/39,903.42
  6. Step 6: Final answer
    x = 30,357.62

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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.