Home / 21,605.29-29,817.71-13,647.13

Finding the Fourth Proportional to 21,605.29, 29,817.71 and 13,647.13

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Solution

The fourth proportional to 21,605.29, 29,817.71 and 13,647.13 is: 18,834.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.29 : 29,817.71 = 13,647.13 : x
  2. Step 2: Convert to fraction form
    21,605.29/29,817.71 = 13,647.13/x
  3. Step 3: Cross multiply
    21,605.29x = 29,817.71 × 13,647.13
  4. Step 4: Simplify right side
    21,605.29x = 406,926,096.44
  5. Step 5: Solve for x
    x = 406,926,096.44/21,605.29
  6. Step 6: Final answer
    x = 18,834.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.