Home / 13,406.49-18,488.84-8,371.17

Finding the Fourth Proportional to 13,406.49, 18,488.84 and 8,371.17

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Solution

The fourth proportional to 13,406.49, 18,488.84 and 8,371.17 is: 11,544.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.49 : 18,488.84 = 8,371.17 : x
  2. Step 2: Convert to fraction form
    13,406.49/18,488.84 = 8,371.17/x
  3. Step 3: Cross multiply
    13,406.49x = 18,488.84 × 8,371.17
  4. Step 4: Simplify right side
    13,406.49x = 154,773,180.89
  5. Step 5: Solve for x
    x = 154,773,180.89/13,406.49
  6. Step 6: Final answer
    x = 11,544.65

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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.