Home / 39,144.35-54,019.34-21,239.40

Finding the Fourth Proportional to 39,144.35, 54,019.34 and 21,239.40

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Solution

The fourth proportional to 39,144.35, 54,019.34 and 21,239.40 is: 29,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,144.35 : 54,019.34 = 21,239.40 : x
  2. Step 2: Convert to fraction form
    39,144.35/54,019.34 = 21,239.40/x
  3. Step 3: Cross multiply
    39,144.35x = 54,019.34 × 21,239.40
  4. Step 4: Simplify right side
    39,144.35x = 1,147,338,263.80
  5. Step 5: Solve for x
    x = 1,147,338,263.80/39,144.35
  6. Step 6: Final answer
    x = 29,310.45

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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.