Home / 39,235.40-54,145.19-21,330.42

Finding the Fourth Proportional to 39,235.40, 54,145.19 and 21,330.42

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Solution

The fourth proportional to 39,235.40, 54,145.19 and 21,330.42 is: 29,436.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.40 : 54,145.19 = 21,330.42 : x
  2. Step 2: Convert to fraction form
    39,235.40/54,145.19 = 21,330.42/x
  3. Step 3: Cross multiply
    39,235.40x = 54,145.19 × 21,330.42
  4. Step 4: Simplify right side
    39,235.40x = 1,154,939,493.96
  5. Step 5: Solve for x
    x = 1,154,939,493.96/39,235.40
  6. Step 6: Final answer
    x = 29,436.16

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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.