Home / 20,523.80-28,322.63-11,574.20

Finding the Fourth Proportional to 20,523.80, 28,322.63 and 11,574.20

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Solution

The fourth proportional to 20,523.80, 28,322.63 and 11,574.20 is: 15,972.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,523.80 : 28,322.63 = 11,574.20 : x
  2. Step 2: Convert to fraction form
    20,523.80/28,322.63 = 11,574.20/x
  3. Step 3: Cross multiply
    20,523.80x = 28,322.63 × 11,574.20
  4. Step 4: Simplify right side
    20,523.80x = 327,811,584.66
  5. Step 5: Solve for x
    x = 327,811,584.66/20,523.80
  6. Step 6: Final answer
    x = 15,972.27

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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.