Home / 20,704.24-28,570.80-12,206.08

Finding the Fourth Proportional to 20,704.24, 28,570.80 and 12,206.08

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Solution

The fourth proportional to 20,704.24, 28,570.80 and 12,206.08 is: 16,843.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.24 : 28,570.80 = 12,206.08 : x
  2. Step 2: Convert to fraction form
    20,704.24/28,570.80 = 12,206.08/x
  3. Step 3: Cross multiply
    20,704.24x = 28,570.80 × 12,206.08
  4. Step 4: Simplify right side
    20,704.24x = 348,737,470.46
  5. Step 5: Solve for x
    x = 348,737,470.46/20,704.24
  6. Step 6: Final answer
    x = 16,843.77

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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.