Home / 13,137.57-18,129.84-9,367.30

Finding the Fourth Proportional to 13,137.57, 18,129.84 and 9,367.30

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Solution

The fourth proportional to 13,137.57, 18,129.84 and 9,367.30 is: 12,926.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.57 : 18,129.84 = 9,367.30 : x
  2. Step 2: Convert to fraction form
    13,137.57/18,129.84 = 9,367.30/x
  3. Step 3: Cross multiply
    13,137.57x = 18,129.84 × 9,367.30
  4. Step 4: Simplify right side
    13,137.57x = 169,827,604.91
  5. Step 5: Solve for x
    x = 169,827,604.91/13,137.57
  6. Step 6: Final answer
    x = 12,926.87

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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.