Home / 19,972.20-29,958.30-8,125.95

Finding the Fourth Proportional to 19,972.20, 29,958.30 and 8,125.95

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Solution

The fourth proportional to 19,972.20, 29,958.30 and 8,125.95 is: 12,188.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.20 : 29,958.30 = 8,125.95 : x
  2. Step 2: Convert to fraction form
    19,972.20/29,958.30 = 8,125.95/x
  3. Step 3: Cross multiply
    19,972.20x = 29,958.30 × 8,125.95
  4. Step 4: Simplify right side
    19,972.20x = 243,439,647.89
  5. Step 5: Solve for x
    x = 243,439,647.89/19,972.20
  6. Step 6: Final answer
    x = 12,188.93

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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.