Home / 39,424.32-54,402.48-21,518.28

Finding the Fourth Proportional to 39,424.32, 54,402.48 and 21,518.28

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Solution

The fourth proportional to 39,424.32, 54,402.48 and 21,518.28 is: 29,693.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,424.32 : 54,402.48 = 21,518.28 : x
  2. Step 2: Convert to fraction form
    39,424.32/54,402.48 = 21,518.28/x
  3. Step 3: Cross multiply
    39,424.32x = 54,402.48 × 21,518.28
  4. Step 4: Simplify right side
    39,424.32x = 1,170,647,797.33
  5. Step 5: Solve for x
    x = 1,170,647,797.33/39,424.32
  6. Step 6: Final answer
    x = 29,693.54

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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.