Home / 13,400.24-18,498.68-8,931.44

Finding the Fourth Proportional to 13,400.24, 18,498.68 and 8,931.44

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Solution

The fourth proportional to 13,400.24, 18,498.68 and 8,931.44 is: 12,329.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.24 : 18,498.68 = 8,931.44 : x
  2. Step 2: Convert to fraction form
    13,400.24/18,498.68 = 8,931.44/x
  3. Step 3: Cross multiply
    13,400.24x = 18,498.68 × 8,931.44
  4. Step 4: Simplify right side
    13,400.24x = 165,219,850.50
  5. Step 5: Solve for x
    x = 165,219,850.50/13,400.24
  6. Step 6: Final answer
    x = 12,329.62

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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.