Home / 13,763.52-20,539.80-12,287.28

Finding the Fourth Proportional to 13,763.52, 20,539.80 and 12,287.28

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Solution

The fourth proportional to 13,763.52, 20,539.80 and 12,287.28 is: 18,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.52 : 20,539.80 = 12,287.28 : x
  2. Step 2: Convert to fraction form
    13,763.52/20,539.80 = 12,287.28/x
  3. Step 3: Cross multiply
    13,763.52x = 20,539.80 × 12,287.28
  4. Step 4: Simplify right side
    13,763.52x = 252,378,273.74
  5. Step 5: Solve for x
    x = 252,378,273.74/13,763.52
  6. Step 6: Final answer
    x = 18,336.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.