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Finding the Fourth Proportional to 13,251, 18,267.10 and 9,259.72

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Solution

The fourth proportional to 13,251, 18,267.10 and 9,259.72 is: 12,764.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251 : 18,267.10 = 9,259.72 : x
  2. Step 2: Convert to fraction form
    13,251/18,267.10 = 9,259.72/x
  3. Step 3: Cross multiply
    13,251x = 18,267.10 × 9,259.72
  4. Step 4: Simplify right side
    13,251x = 169,148,231.21
  5. Step 5: Solve for x
    x = 169,148,231.21/13,251
  6. Step 6: Final answer
    x = 12,764.94

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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.