Home / 39,386.50-54,349.68-21,481.12

Finding the Fourth Proportional to 39,386.50, 54,349.68 and 21,481.12

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Solution

The fourth proportional to 39,386.50, 54,349.68 and 21,481.12 is: 29,641.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,386.50 : 54,349.68 = 21,481.12 : x
  2. Step 2: Convert to fraction form
    39,386.50/54,349.68 = 21,481.12/x
  3. Step 3: Cross multiply
    39,386.50x = 54,349.68 × 21,481.12
  4. Step 4: Simplify right side
    39,386.50x = 1,167,492,299.39
  5. Step 5: Solve for x
    x = 1,167,492,299.39/39,386.50
  6. Step 6: Final answer
    x = 29,641.94

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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.