Home / 20,722.15-28,597.02-12,226.34

Finding the Fourth Proportional to 20,722.15, 28,597.02 and 12,226.34

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Solution

The fourth proportional to 20,722.15, 28,597.02 and 12,226.34 is: 16,872.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.15 : 28,597.02 = 12,226.34 : x
  2. Step 2: Convert to fraction form
    20,722.15/28,597.02 = 12,226.34/x
  3. Step 3: Cross multiply
    20,722.15x = 28,597.02 × 12,226.34
  4. Step 4: Simplify right side
    20,722.15x = 349,636,915.15
  5. Step 5: Solve for x
    x = 349,636,915.15/20,722.15
  6. Step 6: Final answer
    x = 16,872.62

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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.