Home / 13,331.14-19,985.90-5,545.78

Finding the Fourth Proportional to 13,331.14, 19,985.90 and 5,545.78

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Solution

The fourth proportional to 13,331.14, 19,985.90 and 5,545.78 is: 8,314.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.14 : 19,985.90 = 5,545.78 : x
  2. Step 2: Convert to fraction form
    13,331.14/19,985.90 = 5,545.78/x
  3. Step 3: Cross multiply
    13,331.14x = 19,985.90 × 5,545.78
  4. Step 4: Simplify right side
    13,331.14x = 110,837,404.50
  5. Step 5: Solve for x
    x = 110,837,404.50/13,331.14
  6. Step 6: Final answer
    x = 8,314.17

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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.