Home / 13,662.90-18,855.72-10,299.78

Finding the Fourth Proportional to 13,662.90, 18,855.72 and 10,299.78

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Solution

The fourth proportional to 13,662.90, 18,855.72 and 10,299.78 is: 14,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.90 : 18,855.72 = 10,299.78 : x
  2. Step 2: Convert to fraction form
    13,662.90/18,855.72 = 10,299.78/x
  3. Step 3: Cross multiply
    13,662.90x = 18,855.72 × 10,299.78
  4. Step 4: Simplify right side
    13,662.90x = 194,209,767.74
  5. Step 5: Solve for x
    x = 194,209,767.74/13,662.90
  6. Step 6: Final answer
    x = 14,214.39

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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.