Home / 38,395.20-52,984.40-21,399.52

Finding the Fourth Proportional to 38,395.20, 52,984.40 and 21,399.52

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Solution

The fourth proportional to 38,395.20, 52,984.40 and 21,399.52 is: 29,530.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,395.20 : 52,984.40 = 21,399.52 : x
  2. Step 2: Convert to fraction form
    38,395.20/52,984.40 = 21,399.52/x
  3. Step 3: Cross multiply
    38,395.20x = 52,984.40 × 21,399.52
  4. Step 4: Simplify right side
    38,395.20x = 1,133,840,727.49
  5. Step 5: Solve for x
    x = 1,133,840,727.49/38,395.20
  6. Step 6: Final answer
    x = 29,530.79

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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.