Home / 39,286.49-54,214.32-21,381.11

Finding the Fourth Proportional to 39,286.49, 54,214.32 and 21,381.11

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Solution

The fourth proportional to 39,286.49, 54,214.32 and 21,381.11 is: 29,505.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.49 : 54,214.32 = 21,381.11 : x
  2. Step 2: Convert to fraction form
    39,286.49/54,214.32 = 21,381.11/x
  3. Step 3: Cross multiply
    39,286.49x = 54,214.32 × 21,381.11
  4. Step 4: Simplify right side
    39,286.49x = 1,159,162,339.50
  5. Step 5: Solve for x
    x = 1,159,162,339.50/39,286.49
  6. Step 6: Final answer
    x = 29,505.37

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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.