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Finding the Fourth Proportional to 19,992.30, 29,988.45 and 19,700.70

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Solution

The fourth proportional to 19,992.30, 29,988.45 and 19,700.70 is: 29,551.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.30 : 29,988.45 = 19,700.70 : x
  2. Step 2: Convert to fraction form
    19,992.30/29,988.45 = 19,700.70/x
  3. Step 3: Cross multiply
    19,992.30x = 29,988.45 × 19,700.70
  4. Step 4: Simplify right side
    19,992.30x = 590,793,456.92
  5. Step 5: Solve for x
    x = 590,793,456.92/19,992.30
  6. Step 6: Final answer
    x = 29,551.05

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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.