Home / 20,535.88-28,339.05-11,583.49

Finding the Fourth Proportional to 20,535.88, 28,339.05 and 11,583.49

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Solution

The fourth proportional to 20,535.88, 28,339.05 and 11,583.49 is: 15,984.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.88 : 28,339.05 = 11,583.49 : x
  2. Step 2: Convert to fraction form
    20,535.88/28,339.05 = 11,583.49/x
  3. Step 3: Cross multiply
    20,535.88x = 28,339.05 × 11,583.49
  4. Step 4: Simplify right side
    20,535.88x = 328,265,102.28
  5. Step 5: Solve for x
    x = 328,265,102.28/20,535.88
  6. Step 6: Final answer
    x = 15,984.95

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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.