Home / 21,904.20-32,807.70-8,749.80

Finding the Fourth Proportional to 21,904.20, 32,807.70 and 8,749.80

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Solution

The fourth proportional to 21,904.20, 32,807.70 and 8,749.80 is: 13,105.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.20 : 32,807.70 = 8,749.80 : x
  2. Step 2: Convert to fraction form
    21,904.20/32,807.70 = 8,749.80/x
  3. Step 3: Cross multiply
    21,904.20x = 32,807.70 × 8,749.80
  4. Step 4: Simplify right side
    21,904.20x = 287,060,813.46
  5. Step 5: Solve for x
    x = 287,060,813.46/21,904.20
  6. Step 6: Final answer
    x = 13,105.29

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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.