Home / 19,813.30-29,699.96-12,422.95

Finding the Fourth Proportional to 19,813.30, 29,699.96 and 12,422.95

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Solution

The fourth proportional to 19,813.30, 29,699.96 and 12,422.95 is: 18,621.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,813.30 : 29,699.96 = 12,422.95 : x
  2. Step 2: Convert to fraction form
    19,813.30/29,699.96 = 12,422.95/x
  3. Step 3: Cross multiply
    19,813.30x = 29,699.96 × 12,422.95
  4. Step 4: Simplify right side
    19,813.30x = 368,961,118.08
  5. Step 5: Solve for x
    x = 368,961,118.08/19,813.30
  6. Step 6: Final answer
    x = 18,621.89

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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.