Home / 25,123.80-37,664.10-12,811.80

Finding the Fourth Proportional to 25,123.80, 37,664.10 and 12,811.80

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Solution

The fourth proportional to 25,123.80, 37,664.10 and 12,811.80 is: 19,206.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,123.80 : 37,664.10 = 12,811.80 : x
  2. Step 2: Convert to fraction form
    25,123.80/37,664.10 = 12,811.80/x
  3. Step 3: Cross multiply
    25,123.80x = 37,664.10 × 12,811.80
  4. Step 4: Simplify right side
    25,123.80x = 482,544,916.38
  5. Step 5: Solve for x
    x = 482,544,916.38/25,123.80
  6. Step 6: Final answer
    x = 19,206.69

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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.