Home / 18,780.05-25,916.49-11,706.48

Finding the Fourth Proportional to 18,780.05, 25,916.49 and 11,706.48

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Solution

The fourth proportional to 18,780.05, 25,916.49 and 11,706.48 is: 16,154.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.05 : 25,916.49 = 11,706.48 : x
  2. Step 2: Convert to fraction form
    18,780.05/25,916.49 = 11,706.48/x
  3. Step 3: Cross multiply
    18,780.05x = 25,916.49 × 11,706.48
  4. Step 4: Simplify right side
    18,780.05x = 303,390,871.86
  5. Step 5: Solve for x
    x = 303,390,871.86/18,780.05
  6. Step 6: Final answer
    x = 16,154.95

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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.