Home / 20,711.52-28,583.04-11,759.28

Finding the Fourth Proportional to 20,711.52, 28,583.04 and 11,759.28

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Solution

The fourth proportional to 20,711.52, 28,583.04 and 11,759.28 is: 16,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.52 : 28,583.04 = 11,759.28 : x
  2. Step 2: Convert to fraction form
    20,711.52/28,583.04 = 11,759.28/x
  3. Step 3: Cross multiply
    20,711.52x = 28,583.04 × 11,759.28
  4. Step 4: Simplify right side
    20,711.52x = 336,115,970.61
  5. Step 5: Solve for x
    x = 336,115,970.61/20,711.52
  6. Step 6: Final answer
    x = 16,228.46

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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.