Home / 39,147.29-54,023.06-21,242.25

Finding the Fourth Proportional to 39,147.29, 54,023.06 and 21,242.25

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Solution

The fourth proportional to 39,147.29, 54,023.06 and 21,242.25 is: 29,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,147.29 : 54,023.06 = 21,242.25 : x
  2. Step 2: Convert to fraction form
    39,147.29/54,023.06 = 21,242.25/x
  3. Step 3: Cross multiply
    39,147.29x = 54,023.06 × 21,242.25
  4. Step 4: Simplify right side
    39,147.29x = 1,147,571,240.07
  5. Step 5: Solve for x
    x = 1,147,571,240.07/39,147.29
  6. Step 6: Final answer
    x = 29,314.20

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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.