Home / 20,722.91-28,601.28-12,224.52

Finding the Fourth Proportional to 20,722.91, 28,601.28 and 12,224.52

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Solution

The fourth proportional to 20,722.91, 28,601.28 and 12,224.52 is: 16,872.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.91 : 28,601.28 = 12,224.52 : x
  2. Step 2: Convert to fraction form
    20,722.91/28,601.28 = 12,224.52/x
  3. Step 3: Cross multiply
    20,722.91x = 28,601.28 × 12,224.52
  4. Step 4: Simplify right side
    20,722.91x = 349,636,919.39
  5. Step 5: Solve for x
    x = 349,636,919.39/20,722.91
  6. Step 6: Final answer
    x = 16,872.00

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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.