Home / 13,788.18-20,663.64-9,883.98

Finding the Fourth Proportional to 13,788.18, 20,663.64 and 9,883.98

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Solution

The fourth proportional to 13,788.18, 20,663.64 and 9,883.98 is: 14,812.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.18 : 20,663.64 = 9,883.98 : x
  2. Step 2: Convert to fraction form
    13,788.18/20,663.64 = 9,883.98/x
  3. Step 3: Cross multiply
    13,788.18x = 20,663.64 × 9,883.98
  4. Step 4: Simplify right side
    13,788.18x = 204,239,004.49
  5. Step 5: Solve for x
    x = 204,239,004.49/13,788.18
  6. Step 6: Final answer
    x = 14,812.62

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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.