Home / 20,416.40-30,616.67-7,934.77

Finding the Fourth Proportional to 20,416.40, 30,616.67 and 7,934.77

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Solution

The fourth proportional to 20,416.40, 30,616.67 and 7,934.77 is: 11,899.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.40 : 30,616.67 = 7,934.77 : x
  2. Step 2: Convert to fraction form
    20,416.40/30,616.67 = 7,934.77/x
  3. Step 3: Cross multiply
    20,416.40x = 30,616.67 × 7,934.77
  4. Step 4: Simplify right side
    20,416.40x = 242,936,177.91
  5. Step 5: Solve for x
    x = 242,936,177.91/20,416.40
  6. Step 6: Final answer
    x = 11,899.07

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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.