Home / 38,514.45-53,143.46-21,518.06

Finding the Fourth Proportional to 38,514.45, 53,143.46 and 21,518.06

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Solution

The fourth proportional to 38,514.45, 53,143.46 and 21,518.06 is: 29,691.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,514.45 : 53,143.46 = 21,518.06 : x
  2. Step 2: Convert to fraction form
    38,514.45/53,143.46 = 21,518.06/x
  3. Step 3: Cross multiply
    38,514.45x = 53,143.46 × 21,518.06
  4. Step 4: Simplify right side
    38,514.45x = 1,143,543,868.27
  5. Step 5: Solve for x
    x = 1,143,543,868.27/38,514.45
  6. Step 6: Final answer
    x = 29,691.29

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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.