Home / 13,369.12-18,439.44-8,649.76

Finding the Fourth Proportional to 13,369.12, 18,439.44 and 8,649.76

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Solution

The fourth proportional to 13,369.12, 18,439.44 and 8,649.76 is: 11,930.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.12 : 18,439.44 = 8,649.76 : x
  2. Step 2: Convert to fraction form
    13,369.12/18,439.44 = 8,649.76/x
  3. Step 3: Cross multiply
    13,369.12x = 18,439.44 × 8,649.76
  4. Step 4: Simplify right side
    13,369.12x = 159,496,730.53
  5. Step 5: Solve for x
    x = 159,496,730.53/13,369.12
  6. Step 6: Final answer
    x = 11,930.23

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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.