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Finding the Fourth Proportional to 22,343.72, 33,529.71 and 12,489.47

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Solution

The fourth proportional to 22,343.72, 33,529.71 and 12,489.47 is: 18,742.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,343.72 : 33,529.71 = 12,489.47 : x
  2. Step 2: Convert to fraction form
    22,343.72/33,529.71 = 12,489.47/x
  3. Step 3: Cross multiply
    22,343.72x = 33,529.71 × 12,489.47
  4. Step 4: Simplify right side
    22,343.72x = 418,768,139.51
  5. Step 5: Solve for x
    x = 418,768,139.51/22,343.72
  6. Step 6: Final answer
    x = 18,742.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.