Home / 20,589.40-30,884.10-11,225.80

Finding the Fourth Proportional to 20,589.40, 30,884.10 and 11,225.80

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Solution

The fourth proportional to 20,589.40, 30,884.10 and 11,225.80 is: 16,838.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.40 : 30,884.10 = 11,225.80 : x
  2. Step 2: Convert to fraction form
    20,589.40/30,884.10 = 11,225.80/x
  3. Step 3: Cross multiply
    20,589.40x = 30,884.10 × 11,225.80
  4. Step 4: Simplify right side
    20,589.40x = 346,698,729.78
  5. Step 5: Solve for x
    x = 346,698,729.78/20,589.40
  6. Step 6: Final answer
    x = 16,838.70

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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.