Home / 39,769.20-54,881.54-21,864.51

Finding the Fourth Proportional to 39,769.20, 54,881.54 and 21,864.51

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Solution

The fourth proportional to 39,769.20, 54,881.54 and 21,864.51 is: 30,173.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,769.20 : 54,881.54 = 21,864.51 : x
  2. Step 2: Convert to fraction form
    39,769.20/54,881.54 = 21,864.51/x
  3. Step 3: Cross multiply
    39,769.20x = 54,881.54 × 21,864.51
  4. Step 4: Simplify right side
    39,769.20x = 1,199,957,980.15
  5. Step 5: Solve for x
    x = 1,199,957,980.15/39,769.20
  6. Step 6: Final answer
    x = 30,173.05

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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.