Home / 20,536.72-28,340.64-11,584.20

Finding the Fourth Proportional to 20,536.72, 28,340.64 and 11,584.20

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Solution

The fourth proportional to 20,536.72, 28,340.64 and 11,584.20 is: 15,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536.72 : 28,340.64 = 11,584.20 : x
  2. Step 2: Convert to fraction form
    20,536.72/28,340.64 = 11,584.20/x
  3. Step 3: Cross multiply
    20,536.72x = 28,340.64 × 11,584.20
  4. Step 4: Simplify right side
    20,536.72x = 328,303,641.89
  5. Step 5: Solve for x
    x = 328,303,641.89/20,536.72
  6. Step 6: Final answer
    x = 15,986.18

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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.