Home / 20,632.48-30,880.26-18,787.84

Finding the Fourth Proportional to 20,632.48, 30,880.26 and 18,787.84

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Solution

The fourth proportional to 20,632.48, 30,880.26 and 18,787.84 is: 28,119.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.48 : 30,880.26 = 18,787.84 : x
  2. Step 2: Convert to fraction form
    20,632.48/30,880.26 = 18,787.84/x
  3. Step 3: Cross multiply
    20,632.48x = 30,880.26 × 18,787.84
  4. Step 4: Simplify right side
    20,632.48x = 580,173,384.04
  5. Step 5: Solve for x
    x = 580,173,384.04/20,632.48
  6. Step 6: Final answer
    x = 28,119.42

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1.5x scale

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.