Home / 20,585.76-28,406.64-11,632.80

Finding the Fourth Proportional to 20,585.76, 28,406.64 and 11,632.80

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Solution

The fourth proportional to 20,585.76, 28,406.64 and 11,632.80 is: 16,052.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.76 : 28,406.64 = 11,632.80 : x
  2. Step 2: Convert to fraction form
    20,585.76/28,406.64 = 11,632.80/x
  3. Step 3: Cross multiply
    20,585.76x = 28,406.64 × 11,632.80
  4. Step 4: Simplify right side
    20,585.76x = 330,448,761.79
  5. Step 5: Solve for x
    x = 330,448,761.79/20,585.76
  6. Step 6: Final answer
    x = 16,052.30

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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.