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Finding the Fourth Proportional to 14,003.05, 21,043.16 and 7,434.16

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Solution

The fourth proportional to 14,003.05, 21,043.16 and 7,434.16 is: 11,171.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.05 : 21,043.16 = 7,434.16 : x
  2. Step 2: Convert to fraction form
    14,003.05/21,043.16 = 7,434.16/x
  3. Step 3: Cross multiply
    14,003.05x = 21,043.16 × 7,434.16
  4. Step 4: Simplify right side
    14,003.05x = 156,438,218.35
  5. Step 5: Solve for x
    x = 156,438,218.35/14,003.05
  6. Step 6: Final answer
    x = 11,171.72

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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.