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Finding the Fourth Proportional to 25,615, 38,389.02 and 13,124.44

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Solution

The fourth proportional to 25,615, 38,389.02 and 13,124.44 is: 19,669.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,615 : 38,389.02 = 13,124.44 : x
  2. Step 2: Convert to fraction form
    25,615/38,389.02 = 13,124.44/x
  3. Step 3: Cross multiply
    25,615x = 38,389.02 × 13,124.44
  4. Step 4: Simplify right side
    25,615x = 503,834,389.65
  5. Step 5: Solve for x
    x = 503,834,389.65/25,615
  6. Step 6: Final answer
    x = 19,669.51

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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.