Home / 39,718.65-54,812.13-21,814.04

Finding the Fourth Proportional to 39,718.65, 54,812.13 and 21,814.04

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Solution

The fourth proportional to 39,718.65, 54,812.13 and 21,814.04 is: 30,103.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.65 : 54,812.13 = 21,814.04 : x
  2. Step 2: Convert to fraction form
    39,718.65/54,812.13 = 21,814.04/x
  3. Step 3: Cross multiply
    39,718.65x = 54,812.13 × 21,814.04
  4. Step 4: Simplify right side
    39,718.65x = 1,195,673,722.24
  5. Step 5: Solve for x
    x = 1,195,673,722.24/39,718.65
  6. Step 6: Final answer
    x = 30,103.58

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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.