Home / 20,615.38-30,895.08-18,566.86

Finding the Fourth Proportional to 20,615.38, 30,895.08 and 18,566.86

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Solution

The fourth proportional to 20,615.38, 30,895.08 and 18,566.86 is: 27,825.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.38 : 30,895.08 = 18,566.86 : x
  2. Step 2: Convert to fraction form
    20,615.38/30,895.08 = 18,566.86/x
  3. Step 3: Cross multiply
    20,615.38x = 30,895.08 × 18,566.86
  4. Step 4: Simplify right side
    20,615.38x = 573,624,625.05
  5. Step 5: Solve for x
    x = 573,624,625.05/20,615.38
  6. Step 6: Final answer
    x = 27,825.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.