Home / 20,479.24-30,559.08-18,272.80

Finding the Fourth Proportional to 20,479.24, 30,559.08 and 18,272.80

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Solution

The fourth proportional to 20,479.24, 30,559.08 and 18,272.80 is: 27,266.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.24 : 30,559.08 = 18,272.80 : x
  2. Step 2: Convert to fraction form
    20,479.24/30,559.08 = 18,272.80/x
  3. Step 3: Cross multiply
    20,479.24x = 30,559.08 × 18,272.80
  4. Step 4: Simplify right side
    20,479.24x = 558,399,957.02
  5. Step 5: Solve for x
    x = 558,399,957.02/20,479.24
  6. Step 6: Final answer
    x = 27,266.63

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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.