Home / 15,620.80-21,550.64-9,954.52

Finding the Fourth Proportional to 15,620.80, 21,550.64 and 9,954.52

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Solution

The fourth proportional to 15,620.80, 21,550.64 and 9,954.52 is: 13,733.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.80 : 21,550.64 = 9,954.52 : x
  2. Step 2: Convert to fraction form
    15,620.80/21,550.64 = 9,954.52/x
  3. Step 3: Cross multiply
    15,620.80x = 21,550.64 × 9,954.52
  4. Step 4: Simplify right side
    15,620.80x = 214,526,276.89
  5. Step 5: Solve for x
    x = 214,526,276.89/15,620.80
  6. Step 6: Final answer
    x = 13,733.37

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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.