Home / 14,749.90-20,380.80-11,790.16

Finding the Fourth Proportional to 14,749.90, 20,380.80 and 11,790.16

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Solution

The fourth proportional to 14,749.90, 20,380.80 and 11,790.16 is: 16,291.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,749.90 : 20,380.80 = 11,790.16 : x
  2. Step 2: Convert to fraction form
    14,749.90/20,380.80 = 11,790.16/x
  3. Step 3: Cross multiply
    14,749.90x = 20,380.80 × 11,790.16
  4. Step 4: Simplify right side
    14,749.90x = 240,292,892.93
  5. Step 5: Solve for x
    x = 240,292,892.93/14,749.90
  6. Step 6: Final answer
    x = 16,291.15

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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.