Home / 38,203-52,719.72-21,207.38

Finding the Fourth Proportional to 38,203, 52,719.72 and 21,207.38

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Solution

The fourth proportional to 38,203, 52,719.72 and 21,207.38 is: 29,265.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,203 : 52,719.72 = 21,207.38 : x
  2. Step 2: Convert to fraction form
    38,203/52,719.72 = 21,207.38/x
  3. Step 3: Cross multiply
    38,203x = 52,719.72 × 21,207.38
  4. Step 4: Simplify right side
    38,203x = 1,118,047,135.53
  5. Step 5: Solve for x
    x = 1,118,047,135.53/38,203
  6. Step 6: Final answer
    x = 29,265.95

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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.