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Finding the Fourth Proportional to 18,713.10, 28,045.28 and 7,606.82

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Solution

The fourth proportional to 18,713.10, 28,045.28 and 7,606.82 is: 11,400.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.10 : 28,045.28 = 7,606.82 : x
  2. Step 2: Convert to fraction form
    18,713.10/28,045.28 = 7,606.82/x
  3. Step 3: Cross multiply
    18,713.10x = 28,045.28 × 7,606.82
  4. Step 4: Simplify right side
    18,713.10x = 213,335,218.55
  5. Step 5: Solve for x
    x = 213,335,218.55/18,713.10
  6. Step 6: Final answer
    x = 11,400.31

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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.