Home / 39,217.75-54,120.98-21,313.06

Finding the Fourth Proportional to 39,217.75, 54,120.98 and 21,313.06

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Solution

The fourth proportional to 39,217.75, 54,120.98 and 21,313.06 is: 29,412.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,217.75 : 54,120.98 = 21,313.06 : x
  2. Step 2: Convert to fraction form
    39,217.75/54,120.98 = 21,313.06/x
  3. Step 3: Cross multiply
    39,217.75x = 54,120.98 × 21,313.06
  4. Step 4: Simplify right side
    39,217.75x = 1,153,483,694.00
  5. Step 5: Solve for x
    x = 1,153,483,694.00/39,217.75
  6. Step 6: Final answer
    x = 29,412.29

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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.