Home / 21,904.20-32,856.30-19,369.80

Finding the Fourth Proportional to 21,904.20, 32,856.30 and 19,369.80

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Solution

The fourth proportional to 21,904.20, 32,856.30 and 19,369.80 is: 29,054.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.20 : 32,856.30 = 19,369.80 : x
  2. Step 2: Convert to fraction form
    21,904.20/32,856.30 = 19,369.80/x
  3. Step 3: Cross multiply
    21,904.20x = 32,856.30 × 19,369.80
  4. Step 4: Simplify right side
    21,904.20x = 636,419,959.74
  5. Step 5: Solve for x
    x = 636,419,959.74/21,904.20
  6. Step 6: Final answer
    x = 29,054.70

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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.