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Finding the Fourth Proportional to 25,879.50, 38,828.36 and 12,741.10

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Solution

The fourth proportional to 25,879.50, 38,828.36 and 12,741.10 is: 19,116.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,879.50 : 38,828.36 = 12,741.10 : x
  2. Step 2: Convert to fraction form
    25,879.50/38,828.36 = 12,741.10/x
  3. Step 3: Cross multiply
    25,879.50x = 38,828.36 × 12,741.10
  4. Step 4: Simplify right side
    25,879.50x = 494,715,952.38
  5. Step 5: Solve for x
    x = 494,715,952.38/25,879.50
  6. Step 6: Final answer
    x = 19,116.13

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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.