Home / 19,511.20-29,266.80-5,471.20

Finding the Fourth Proportional to 19,511.20, 29,266.80 and 5,471.20

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Solution

The fourth proportional to 19,511.20, 29,266.80 and 5,471.20 is: 8,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511.20 : 29,266.80 = 5,471.20 : x
  2. Step 2: Convert to fraction form
    19,511.20/29,266.80 = 5,471.20/x
  3. Step 3: Cross multiply
    19,511.20x = 29,266.80 × 5,471.20
  4. Step 4: Simplify right side
    19,511.20x = 160,124,516.16
  5. Step 5: Solve for x
    x = 160,124,516.16/19,511.20
  6. Step 6: Final answer
    x = 8,206.80

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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.