Home / 39,903.68-55,065.37-21,753.97

Finding the Fourth Proportional to 39,903.68, 55,065.37 and 21,753.97

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Solution

The fourth proportional to 39,903.68, 55,065.37 and 21,753.97 is: 30,019.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.68 : 55,065.37 = 21,753.97 : x
  2. Step 2: Convert to fraction form
    39,903.68/55,065.37 = 21,753.97/x
  3. Step 3: Cross multiply
    39,903.68x = 55,065.37 × 21,753.97
  4. Step 4: Simplify right side
    39,903.68x = 1,197,890,407.02
  5. Step 5: Solve for x
    x = 1,197,890,407.02/39,903.68
  6. Step 6: Final answer
    x = 30,019.55

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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.