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Finding the Fourth Proportional to 30,428.91, 41,992.02 and 17,000.73

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Solution

The fourth proportional to 30,428.91, 41,992.02 and 17,000.73 is: 23,461.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.91 : 41,992.02 = 17,000.73 : x
  2. Step 2: Convert to fraction form
    30,428.91/41,992.02 = 17,000.73/x
  3. Step 3: Cross multiply
    30,428.91x = 41,992.02 × 17,000.73
  4. Step 4: Simplify right side
    30,428.91x = 713,894,994.17
  5. Step 5: Solve for x
    x = 713,894,994.17/30,428.91
  6. Step 6: Final answer
    x = 23,461.08

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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.