Home / 39,393.48-54,364.20-21,489.51

Finding the Fourth Proportional to 39,393.48, 54,364.20 and 21,489.51

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Solution

The fourth proportional to 39,393.48, 54,364.20 and 21,489.51 is: 29,656.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,393.48 : 54,364.20 = 21,489.51 : x
  2. Step 2: Convert to fraction form
    39,393.48/54,364.20 = 21,489.51/x
  3. Step 3: Cross multiply
    39,393.48x = 54,364.20 × 21,489.51
  4. Step 4: Simplify right side
    39,393.48x = 1,168,260,019.54
  5. Step 5: Solve for x
    x = 1,168,260,019.54/39,393.48
  6. Step 6: Final answer
    x = 29,656.18

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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.