Home / 39,769.90-54,881.70-21,864.73

Finding the Fourth Proportional to 39,769.90, 54,881.70 and 21,864.73

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Solution

The fourth proportional to 39,769.90, 54,881.70 and 21,864.73 is: 30,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,769.90 : 54,881.70 = 21,864.73 : x
  2. Step 2: Convert to fraction form
    39,769.90/54,881.70 = 21,864.73/x
  3. Step 3: Cross multiply
    39,769.90x = 54,881.70 × 21,864.73
  4. Step 4: Simplify right side
    39,769.90x = 1,199,973,552.44
  5. Step 5: Solve for x
    x = 1,199,973,552.44/39,769.90
  6. Step 6: Final answer
    x = 30,172.91

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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.