Home / 25,428.51-38,136.69-8,789.13

Finding the Fourth Proportional to 25,428.51, 38,136.69 and 8,789.13

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Solution

The fourth proportional to 25,428.51, 38,136.69 and 8,789.13 is: 13,181.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,428.51 : 38,136.69 = 8,789.13 : x
  2. Step 2: Convert to fraction form
    25,428.51/38,136.69 = 8,789.13/x
  3. Step 3: Cross multiply
    25,428.51x = 38,136.69 × 8,789.13
  4. Step 4: Simplify right side
    25,428.51x = 335,188,326.18
  5. Step 5: Solve for x
    x = 335,188,326.18/25,428.51
  6. Step 6: Final answer
    x = 13,181.60

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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.