Home / 39,187.68-54,079.56-21,282.72

Finding the Fourth Proportional to 39,187.68, 54,079.56 and 21,282.72

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Solution

The fourth proportional to 39,187.68, 54,079.56 and 21,282.72 is: 29,370.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,187.68 : 54,079.56 = 21,282.72 : x
  2. Step 2: Convert to fraction form
    39,187.68/54,079.56 = 21,282.72/x
  3. Step 3: Cross multiply
    39,187.68x = 54,079.56 × 21,282.72
  4. Step 4: Simplify right side
    39,187.68x = 1,150,960,133.20
  5. Step 5: Solve for x
    x = 1,150,960,133.20/39,187.68
  6. Step 6: Final answer
    x = 29,370.46

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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.