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Finding the Fourth Proportional to 38,603.43, 53,273.03 and 21,836.43

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Solution

The fourth proportional to 38,603.43, 53,273.03 and 21,836.43 is: 30,134.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,603.43 : 53,273.03 = 21,836.43 : x
  2. Step 2: Convert to fraction form
    38,603.43/53,273.03 = 21,836.43/x
  3. Step 3: Cross multiply
    38,603.43x = 53,273.03 × 21,836.43
  4. Step 4: Simplify right side
    38,603.43x = 1,163,292,681.30
  5. Step 5: Solve for x
    x = 1,163,292,681.30/38,603.43
  6. Step 6: Final answer
    x = 30,134.44

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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.