Home / 39,146.99-54,023.24-21,242.15

Finding the Fourth Proportional to 39,146.99, 54,023.24 and 21,242.15

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Solution

The fourth proportional to 39,146.99, 54,023.24 and 21,242.15 is: 29,314.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,146.99 : 54,023.24 = 21,242.15 : x
  2. Step 2: Convert to fraction form
    39,146.99/54,023.24 = 21,242.15/x
  3. Step 3: Cross multiply
    39,146.99x = 54,023.24 × 21,242.15
  4. Step 4: Simplify right side
    39,146.99x = 1,147,569,391.24
  5. Step 5: Solve for x
    x = 1,147,569,391.24/39,146.99
  6. Step 6: Final answer
    x = 29,314.37

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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.