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Finding the Fourth Proportional to 25,991.66, 35,866.32 and 15,379.44

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Solution

The fourth proportional to 25,991.66, 35,866.32 and 15,379.44 is: 21,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,991.66 : 35,866.32 = 15,379.44 : x
  2. Step 2: Convert to fraction form
    25,991.66/35,866.32 = 15,379.44/x
  3. Step 3: Cross multiply
    25,991.66x = 35,866.32 × 15,379.44
  4. Step 4: Simplify right side
    25,991.66x = 551,603,916.46
  5. Step 5: Solve for x
    x = 551,603,916.46/25,991.66
  6. Step 6: Final answer
    x = 21,222.34

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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.