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Finding the Fourth Proportional to 38,160.08, 52,661.04 and 21,392

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Solution

The fourth proportional to 38,160.08, 52,661.04 and 21,392 is: 29,521.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,160.08 : 52,661.04 = 21,392 : x
  2. Step 2: Convert to fraction form
    38,160.08/52,661.04 = 21,392/x
  3. Step 3: Cross multiply
    38,160.08x = 52,661.04 × 21,392
  4. Step 4: Simplify right side
    38,160.08x = 1,126,524,967.68
  5. Step 5: Solve for x
    x = 1,126,524,967.68/38,160.08
  6. Step 6: Final answer
    x = 29,521.03

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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.