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Finding the Fourth Proportional to 15,154.16, 20,905.50 and 11,773.84

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Solution

The fourth proportional to 15,154.16, 20,905.50 and 11,773.84 is: 16,242.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.16 : 20,905.50 = 11,773.84 : x
  2. Step 2: Convert to fraction form
    15,154.16/20,905.50 = 11,773.84/x
  3. Step 3: Cross multiply
    15,154.16x = 20,905.50 × 11,773.84
  4. Step 4: Simplify right side
    15,154.16x = 246,138,004.01
  5. Step 5: Solve for x
    x = 246,138,004.01/15,154.16
  6. Step 6: Final answer
    x = 16,242.27

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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.