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Finding the Fourth Proportional to 16,383.68, 22,609.80 and 8,931.68

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Solution

The fourth proportional to 16,383.68, 22,609.80 and 8,931.68 is: 12,325.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,383.68 : 22,609.80 = 8,931.68 : x
  2. Step 2: Convert to fraction form
    16,383.68/22,609.80 = 8,931.68/x
  3. Step 3: Cross multiply
    16,383.68x = 22,609.80 × 8,931.68
  4. Step 4: Simplify right side
    16,383.68x = 201,943,498.46
  5. Step 5: Solve for x
    x = 201,943,498.46/16,383.68
  6. Step 6: Final answer
    x = 12,325.89

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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.