Home / 39,419.74-54,399.08-21,514.90

Finding the Fourth Proportional to 39,419.74, 54,399.08 and 21,514.90

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Solution

The fourth proportional to 39,419.74, 54,399.08 and 21,514.90 is: 29,690.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,419.74 : 54,399.08 = 21,514.90 : x
  2. Step 2: Convert to fraction form
    39,419.74/54,399.08 = 21,514.90/x
  3. Step 3: Cross multiply
    39,419.74x = 54,399.08 × 21,514.90
  4. Step 4: Simplify right side
    39,419.74x = 1,170,390,766.29
  5. Step 5: Solve for x
    x = 1,170,390,766.29/39,419.74
  6. Step 6: Final answer
    x = 29,690.47

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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.