Home / 39,837.42-54,977.13-21,934.40

Finding the Fourth Proportional to 39,837.42, 54,977.13 and 21,934.40

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Solution

The fourth proportional to 39,837.42, 54,977.13 and 21,934.40 is: 30,270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,837.42 : 54,977.13 = 21,934.40 : x
  2. Step 2: Convert to fraction form
    39,837.42/54,977.13 = 21,934.40/x
  3. Step 3: Cross multiply
    39,837.42x = 54,977.13 × 21,934.40
  4. Step 4: Simplify right side
    39,837.42x = 1,205,890,085.39
  5. Step 5: Solve for x
    x = 1,205,890,085.39/39,837.42
  6. Step 6: Final answer
    x = 30,270.29

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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.