Home / 20,423.44-30,642.88-13,911.04

Finding the Fourth Proportional to 20,423.44, 30,642.88 and 13,911.04

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Solution

The fourth proportional to 20,423.44, 30,642.88 and 13,911.04 is: 20,871.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.44 : 30,642.88 = 13,911.04 : x
  2. Step 2: Convert to fraction form
    20,423.44/30,642.88 = 13,911.04/x
  3. Step 3: Cross multiply
    20,423.44x = 30,642.88 × 13,911.04
  4. Step 4: Simplify right side
    20,423.44x = 426,274,329.40
  5. Step 5: Solve for x
    x = 426,274,329.40/20,423.44
  6. Step 6: Final answer
    x = 20,871.82

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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.