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Finding the Fourth Proportional to 39,359, 54,313.83 and 21,453.62

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Solution

The fourth proportional to 39,359, 54,313.83 and 21,453.62 is: 29,605.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,359 : 54,313.83 = 21,453.62 : x
  2. Step 2: Convert to fraction form
    39,359/54,313.83 = 21,453.62/x
  3. Step 3: Cross multiply
    39,359x = 54,313.83 × 21,453.62
  4. Step 4: Simplify right side
    39,359x = 1,165,228,269.56
  5. Step 5: Solve for x
    x = 1,165,228,269.56/39,359
  6. Step 6: Final answer
    x = 29,605.13

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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.