Home / 20,426.90-28,192.16-12,473.73

Finding the Fourth Proportional to 20,426.90, 28,192.16 and 12,473.73

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Solution

The fourth proportional to 20,426.90, 28,192.16 and 12,473.73 is: 17,215.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.90 : 28,192.16 = 12,473.73 : x
  2. Step 2: Convert to fraction form
    20,426.90/28,192.16 = 12,473.73/x
  3. Step 3: Cross multiply
    20,426.90x = 28,192.16 × 12,473.73
  4. Step 4: Simplify right side
    20,426.90x = 351,661,423.14
  5. Step 5: Solve for x
    x = 351,661,423.14/20,426.90
  6. Step 6: Final answer
    x = 17,215.61

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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.