Home / 20,694.80-28,557.36-11,263.16

Finding the Fourth Proportional to 20,694.80, 28,557.36 and 11,263.16

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Solution

The fourth proportional to 20,694.80, 28,557.36 and 11,263.16 is: 15,542.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.80 : 28,557.36 = 11,263.16 : x
  2. Step 2: Convert to fraction form
    20,694.80/28,557.36 = 11,263.16/x
  3. Step 3: Cross multiply
    20,694.80x = 28,557.36 × 11,263.16
  4. Step 4: Simplify right side
    20,694.80x = 321,646,114.86
  5. Step 5: Solve for x
    x = 321,646,114.86/20,694.80
  6. Step 6: Final answer
    x = 15,542.36

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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.