Home / 20,156.70-27,818.23-11,207.10

Finding the Fourth Proportional to 20,156.70, 27,818.23 and 11,207.10

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Solution

The fourth proportional to 20,156.70, 27,818.23 and 11,207.10 is: 15,466.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.70 : 27,818.23 = 11,207.10 : x
  2. Step 2: Convert to fraction form
    20,156.70/27,818.23 = 11,207.10/x
  3. Step 3: Cross multiply
    20,156.70x = 27,818.23 × 11,207.10
  4. Step 4: Simplify right side
    20,156.70x = 311,761,685.43
  5. Step 5: Solve for x
    x = 311,761,685.43/20,156.70
  6. Step 6: Final answer
    x = 15,466.90

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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.