Home / 19,890.30-29,833.88-11,565

Finding the Fourth Proportional to 19,890.30, 29,833.88 and 11,565

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Solution

The fourth proportional to 19,890.30, 29,833.88 and 11,565 is: 17,346.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.30 : 29,833.88 = 11,565 : x
  2. Step 2: Convert to fraction form
    19,890.30/29,833.88 = 11,565/x
  3. Step 3: Cross multiply
    19,890.30x = 29,833.88 × 11,565
  4. Step 4: Simplify right side
    19,890.30x = 345,028,822.20
  5. Step 5: Solve for x
    x = 345,028,822.20/19,890.30
  6. Step 6: Final answer
    x = 17,346.59

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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.