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Finding the Fourth Proportional to 18,871.60, 26,044.26 and 11,318.22

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Solution

The fourth proportional to 18,871.60, 26,044.26 and 11,318.22 is: 15,620.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.60 : 26,044.26 = 11,318.22 : x
  2. Step 2: Convert to fraction form
    18,871.60/26,044.26 = 11,318.22/x
  3. Step 3: Cross multiply
    18,871.60x = 26,044.26 × 11,318.22
  4. Step 4: Simplify right side
    18,871.60x = 294,774,664.42
  5. Step 5: Solve for x
    x = 294,774,664.42/18,871.60
  6. Step 6: Final answer
    x = 15,620.01

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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.