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Finding the Fourth Proportional to 30,248.91, 45,373.41 and 11,780.91

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Solution

The fourth proportional to 30,248.91, 45,373.41 and 11,780.91 is: 17,671.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,248.91 : 45,373.41 = 11,780.91 : x
  2. Step 2: Convert to fraction form
    30,248.91/45,373.41 = 11,780.91/x
  3. Step 3: Cross multiply
    30,248.91x = 45,373.41 × 11,780.91
  4. Step 4: Simplify right side
    30,248.91x = 534,540,059.60
  5. Step 5: Solve for x
    x = 534,540,059.60/30,248.91
  6. Step 6: Final answer
    x = 17,671.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.