Home / 39,718.08-54,814.19-21,816.54

Finding the Fourth Proportional to 39,718.08, 54,814.19 and 21,816.54

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Solution

The fourth proportional to 39,718.08, 54,814.19 and 21,816.54 is: 30,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.08 : 54,814.19 = 21,816.54 : x
  2. Step 2: Convert to fraction form
    39,718.08/54,814.19 = 21,816.54/x
  3. Step 3: Cross multiply
    39,718.08x = 54,814.19 × 21,816.54
  4. Step 4: Simplify right side
    39,718.08x = 1,195,855,859.62
  5. Step 5: Solve for x
    x = 1,195,855,859.62/39,718.08
  6. Step 6: Final answer
    x = 30,108.60

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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.