Home / 20,700.09-28,565.28-11,268.63

Finding the Fourth Proportional to 20,700.09, 28,565.28 and 11,268.63

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Solution

The fourth proportional to 20,700.09, 28,565.28 and 11,268.63 is: 15,550.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.09 : 28,565.28 = 11,268.63 : x
  2. Step 2: Convert to fraction form
    20,700.09/28,565.28 = 11,268.63/x
  3. Step 3: Cross multiply
    20,700.09x = 28,565.28 × 11,268.63
  4. Step 4: Simplify right side
    20,700.09x = 321,891,571.17
  5. Step 5: Solve for x
    x = 321,891,571.17/20,700.09
  6. Step 6: Final answer
    x = 15,550.25

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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.