Home / 38,515.62-53,151.19-21,522.79

Finding the Fourth Proportional to 38,515.62, 53,151.19 and 21,522.79

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Solution

The fourth proportional to 38,515.62, 53,151.19 and 21,522.79 is: 29,701.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.62 : 53,151.19 = 21,522.79 : x
  2. Step 2: Convert to fraction form
    38,515.62/53,151.19 = 21,522.79/x
  3. Step 3: Cross multiply
    38,515.62x = 53,151.19 × 21,522.79
  4. Step 4: Simplify right side
    38,515.62x = 1,143,961,913.25
  5. Step 5: Solve for x
    x = 1,143,961,913.25/38,515.62
  6. Step 6: Final answer
    x = 29,701.25

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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.