Home / 25,919.81-38,866.80-10,115.39

Finding the Fourth Proportional to 25,919.81, 38,866.80 and 10,115.39

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Solution

The fourth proportional to 25,919.81, 38,866.80 and 10,115.39 is: 15,168.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,919.81 : 38,866.80 = 10,115.39 : x
  2. Step 2: Convert to fraction form
    25,919.81/38,866.80 = 10,115.39/x
  3. Step 3: Cross multiply
    25,919.81x = 38,866.80 × 10,115.39
  4. Step 4: Simplify right side
    25,919.81x = 393,152,840.05
  5. Step 5: Solve for x
    x = 393,152,840.05/25,919.81
  6. Step 6: Final answer
    x = 15,168.04

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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.