Home / 18,582.45-25,680.65-15,219.93

Finding the Fourth Proportional to 18,582.45, 25,680.65 and 15,219.93

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Solution

The fourth proportional to 18,582.45, 25,680.65 and 15,219.93 is: 21,033.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,582.45 : 25,680.65 = 15,219.93 : x
  2. Step 2: Convert to fraction form
    18,582.45/25,680.65 = 15,219.93/x
  3. Step 3: Cross multiply
    18,582.45x = 25,680.65 × 15,219.93
  4. Step 4: Simplify right side
    18,582.45x = 390,857,715.56
  5. Step 5: Solve for x
    x = 390,857,715.56/18,582.45
  6. Step 6: Final answer
    x = 21,033.71

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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.