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Finding the Fourth Proportional to 12,797.17, 19,195.75 and 7,990.02

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Solution

The fourth proportional to 12,797.17, 19,195.75 and 7,990.02 is: 11,985.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,797.17 : 19,195.75 = 7,990.02 : x
  2. Step 2: Convert to fraction form
    12,797.17/19,195.75 = 7,990.02/x
  3. Step 3: Cross multiply
    12,797.17x = 19,195.75 × 7,990.02
  4. Step 4: Simplify right side
    12,797.17x = 153,374,426.42
  5. Step 5: Solve for x
    x = 153,374,426.42/12,797.17
  6. Step 6: Final answer
    x = 11,985.03

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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.