Home / 25,806.78-38,647.62-13,123.17

Finding the Fourth Proportional to 25,806.78, 38,647.62 and 13,123.17

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Solution

The fourth proportional to 25,806.78, 38,647.62 and 13,123.17 is: 19,652.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,806.78 : 38,647.62 = 13,123.17 : x
  2. Step 2: Convert to fraction form
    25,806.78/38,647.62 = 13,123.17/x
  3. Step 3: Cross multiply
    25,806.78x = 38,647.62 × 13,123.17
  4. Step 4: Simplify right side
    25,806.78x = 507,179,287.36
  5. Step 5: Solve for x
    x = 507,179,287.36/25,806.78
  6. Step 6: Final answer
    x = 19,652.95

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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.