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Finding the Fourth Proportional to 25,687.99, 38,495.76 and 12,164.81

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Solution

The fourth proportional to 25,687.99, 38,495.76 and 12,164.81 is: 18,230.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,687.99 : 38,495.76 = 12,164.81 : x
  2. Step 2: Convert to fraction form
    25,687.99/38,495.76 = 12,164.81/x
  3. Step 3: Cross multiply
    25,687.99x = 38,495.76 × 12,164.81
  4. Step 4: Simplify right side
    25,687.99x = 468,293,476.38
  5. Step 5: Solve for x
    x = 468,293,476.38/25,687.99
  6. Step 6: Final answer
    x = 18,230.06

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1.5x scale

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.