Home / 20,549.40-28,354.08-12,166.44

Finding the Fourth Proportional to 20,549.40, 28,354.08 and 12,166.44

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Solution

The fourth proportional to 20,549.40, 28,354.08 and 12,166.44 is: 16,787.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.40 : 28,354.08 = 12,166.44 : x
  2. Step 2: Convert to fraction form
    20,549.40/28,354.08 = 12,166.44/x
  3. Step 3: Cross multiply
    20,549.40x = 28,354.08 × 12,166.44
  4. Step 4: Simplify right side
    20,549.40x = 344,968,213.08
  5. Step 5: Solve for x
    x = 344,968,213.08/20,549.40
  6. Step 6: Final answer
    x = 16,787.26

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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.