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Finding the Fourth Proportional to 30,903, 42,653.52 and 18,335.04

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Solution

The fourth proportional to 30,903, 42,653.52 and 18,335.04 is: 25,306.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,903 : 42,653.52 = 18,335.04 : x
  2. Step 2: Convert to fraction form
    30,903/42,653.52 = 18,335.04/x
  3. Step 3: Cross multiply
    30,903x = 42,653.52 × 18,335.04
  4. Step 4: Simplify right side
    30,903x = 782,053,995.34
  5. Step 5: Solve for x
    x = 782,053,995.34/30,903
  6. Step 6: Final answer
    x = 25,306.73

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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.