Home / 14,587.13-20,128.20-8,212.64

Finding the Fourth Proportional to 14,587.13, 20,128.20 and 8,212.64

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Solution

The fourth proportional to 14,587.13, 20,128.20 and 8,212.64 is: 11,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,587.13 : 20,128.20 = 8,212.64 : x
  2. Step 2: Convert to fraction form
    14,587.13/20,128.20 = 8,212.64/x
  3. Step 3: Cross multiply
    14,587.13x = 20,128.20 × 8,212.64
  4. Step 4: Simplify right side
    14,587.13x = 165,305,660.45
  5. Step 5: Solve for x
    x = 165,305,660.45/14,587.13
  6. Step 6: Final answer
    x = 11,332.30

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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.