Home / 13,329.24-19,979.28-8,401.20

Finding the Fourth Proportional to 13,329.24, 19,979.28 and 8,401.20

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Solution

The fourth proportional to 13,329.24, 19,979.28 and 8,401.20 is: 12,592.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,329.24 : 19,979.28 = 8,401.20 : x
  2. Step 2: Convert to fraction form
    13,329.24/19,979.28 = 8,401.20/x
  3. Step 3: Cross multiply
    13,329.24x = 19,979.28 × 8,401.20
  4. Step 4: Simplify right side
    13,329.24x = 167,849,927.14
  5. Step 5: Solve for x
    x = 167,849,927.14/13,329.24
  6. Step 6: Final answer
    x = 12,592.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.