Home / 19,890.67-29,834.43-11,565.39

Finding the Fourth Proportional to 19,890.67, 29,834.43 and 11,565.39

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Solution

The fourth proportional to 19,890.67, 29,834.43 and 11,565.39 is: 17,347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.67 : 29,834.43 = 11,565.39 : x
  2. Step 2: Convert to fraction form
    19,890.67/29,834.43 = 11,565.39/x
  3. Step 3: Cross multiply
    19,890.67x = 29,834.43 × 11,565.39
  4. Step 4: Simplify right side
    19,890.67x = 345,046,818.38
  5. Step 5: Solve for x
    x = 345,046,818.38/19,890.67
  6. Step 6: Final answer
    x = 17,347.17

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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.