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Finding the Fourth Proportional to 13,363.88, 18,442.88 and 7,395.80

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Solution

The fourth proportional to 13,363.88, 18,442.88 and 7,395.80 is: 10,206.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.88 : 18,442.88 = 7,395.80 : x
  2. Step 2: Convert to fraction form
    13,363.88/18,442.88 = 7,395.80/x
  3. Step 3: Cross multiply
    13,363.88x = 18,442.88 × 7,395.80
  4. Step 4: Simplify right side
    13,363.88x = 136,399,916.50
  5. Step 5: Solve for x
    x = 136,399,916.50/13,363.88
  6. Step 6: Final answer
    x = 10,206.61

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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.