Home / 39,768.96-54,881.54-21,864.09

Finding the Fourth Proportional to 39,768.96, 54,881.54 and 21,864.09

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Solution

The fourth proportional to 39,768.96, 54,881.54 and 21,864.09 is: 30,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,768.96 : 54,881.54 = 21,864.09 : x
  2. Step 2: Convert to fraction form
    39,768.96/54,881.54 = 21,864.09/x
  3. Step 3: Cross multiply
    39,768.96x = 54,881.54 × 21,864.09
  4. Step 4: Simplify right side
    39,768.96x = 1,199,935,077.63
  5. Step 5: Solve for x
    x = 1,199,935,077.63/39,768.96
  6. Step 6: Final answer
    x = 30,172.65

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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.