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Finding the Fourth Proportional to 11,935.70, 16,471.02 and 6,630.40

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Solution

The fourth proportional to 11,935.70, 16,471.02 and 6,630.40 is: 9,149.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,935.70 : 16,471.02 = 6,630.40 : x
  2. Step 2: Convert to fraction form
    11,935.70/16,471.02 = 6,630.40/x
  3. Step 3: Cross multiply
    11,935.70x = 16,471.02 × 6,630.40
  4. Step 4: Simplify right side
    11,935.70x = 109,209,451.01
  5. Step 5: Solve for x
    x = 109,209,451.01/11,935.70
  6. Step 6: Final answer
    x = 9,149.82

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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.