Home / 39,764.84-54,875.46-21,861

Finding the Fourth Proportional to 39,764.84, 54,875.46 and 21,861

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Solution

The fourth proportional to 39,764.84, 54,875.46 and 21,861 is: 30,168.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,764.84 : 54,875.46 = 21,861 : x
  2. Step 2: Convert to fraction form
    39,764.84/54,875.46 = 21,861/x
  3. Step 3: Cross multiply
    39,764.84x = 54,875.46 × 21,861
  4. Step 4: Simplify right side
    39,764.84x = 1,199,632,431.06
  5. Step 5: Solve for x
    x = 1,199,632,431.06/39,764.84
  6. Step 6: Final answer
    x = 30,168.17

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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.