Home / 39,834.65-54,969.83-21,929.20

Finding the Fourth Proportional to 39,834.65, 54,969.83 and 21,929.20

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Solution

The fourth proportional to 39,834.65, 54,969.83 and 21,929.20 is: 30,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,834.65 : 54,969.83 = 21,929.20 : x
  2. Step 2: Convert to fraction form
    39,834.65/54,969.83 = 21,929.20/x
  3. Step 3: Cross multiply
    39,834.65x = 54,969.83 × 21,929.20
  4. Step 4: Simplify right side
    39,834.65x = 1,205,444,396.04
  5. Step 5: Solve for x
    x = 1,205,444,396.04/39,834.65
  6. Step 6: Final answer
    x = 30,261.20

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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.