Home / 39,235.34-54,145.83-21,331.58

Finding the Fourth Proportional to 39,235.34, 54,145.83 and 21,331.58

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Solution

The fourth proportional to 39,235.34, 54,145.83 and 21,331.58 is: 29,438.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.34 : 54,145.83 = 21,331.58 : x
  2. Step 2: Convert to fraction form
    39,235.34/54,145.83 = 21,331.58/x
  3. Step 3: Cross multiply
    39,235.34x = 54,145.83 × 21,331.58
  4. Step 4: Simplify right side
    39,235.34x = 1,155,015,833.58
  5. Step 5: Solve for x
    x = 1,155,015,833.58/39,235.34
  6. Step 6: Final answer
    x = 29,438.15

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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.