Home / 39,834.57-54,971.40-21,929.88

Finding the Fourth Proportional to 39,834.57, 54,971.40 and 21,929.88

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Solution

The fourth proportional to 39,834.57, 54,971.40 and 21,929.88 is: 30,263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,834.57 : 54,971.40 = 21,929.88 : x
  2. Step 2: Convert to fraction form
    39,834.57/54,971.40 = 21,929.88/x
  3. Step 3: Cross multiply
    39,834.57x = 54,971.40 × 21,929.88
  4. Step 4: Simplify right side
    39,834.57x = 1,205,516,205.43
  5. Step 5: Solve for x
    x = 1,205,516,205.43/39,834.57
  6. Step 6: Final answer
    x = 30,263.07

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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.