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Finding the Fourth Proportional to 25,879.04, 38,818.51 and 8,111.06

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Solution

The fourth proportional to 25,879.04, 38,818.51 and 8,111.06 is: 12,166.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,879.04 : 38,818.51 = 8,111.06 : x
  2. Step 2: Convert to fraction form
    25,879.04/38,818.51 = 8,111.06/x
  3. Step 3: Cross multiply
    25,879.04x = 38,818.51 × 8,111.06
  4. Step 4: Simplify right side
    25,879.04x = 314,859,340.49
  5. Step 5: Solve for x
    x = 314,859,340.49/25,879.04
  6. Step 6: Final answer
    x = 12,166.58

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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.