Home / 39,224.82-54,130.33-21,319.78

Finding the Fourth Proportional to 39,224.82, 54,130.33 and 21,319.78

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Solution

The fourth proportional to 39,224.82, 54,130.33 and 21,319.78 is: 29,421.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,224.82 : 54,130.33 = 21,319.78 : x
  2. Step 2: Convert to fraction form
    39,224.82/54,130.33 = 21,319.78/x
  3. Step 3: Cross multiply
    39,224.82x = 54,130.33 × 21,319.78
  4. Step 4: Simplify right side
    39,224.82x = 1,154,046,726.93
  5. Step 5: Solve for x
    x = 1,154,046,726.93/39,224.82
  6. Step 6: Final answer
    x = 29,421.34

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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.