Home / 20,654.10-28,502.76-12,156.54

Finding the Fourth Proportional to 20,654.10, 28,502.76 and 12,156.54

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Solution

The fourth proportional to 20,654.10, 28,502.76 and 12,156.54 is: 16,776.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.10 : 28,502.76 = 12,156.54 : x
  2. Step 2: Convert to fraction form
    20,654.10/28,502.76 = 12,156.54/x
  3. Step 3: Cross multiply
    20,654.10x = 28,502.76 × 12,156.54
  4. Step 4: Simplify right side
    20,654.10x = 346,494,942.05
  5. Step 5: Solve for x
    x = 346,494,942.05/20,654.10
  6. Step 6: Final answer
    x = 16,776.09

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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.