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Finding the Fourth Proportional to 19,993.30, 29,989.95 and 19,701.70

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Solution

The fourth proportional to 19,993.30, 29,989.95 and 19,701.70 is: 29,552.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.30 : 29,989.95 = 19,701.70 : x
  2. Step 2: Convert to fraction form
    19,993.30/29,989.95 = 19,701.70/x
  3. Step 3: Cross multiply
    19,993.30x = 29,989.95 × 19,701.70
  4. Step 4: Simplify right side
    19,993.30x = 590,852,997.92
  5. Step 5: Solve for x
    x = 590,852,997.92/19,993.30
  6. Step 6: Final answer
    x = 29,552.55

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Similar ratio
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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.