Home / 20,518.22-28,315.86-11,566.10

Finding the Fourth Proportional to 20,518.22, 28,315.86 and 11,566.10

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Solution

The fourth proportional to 20,518.22, 28,315.86 and 11,566.10 is: 15,961.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518.22 : 28,315.86 = 11,566.10 : x
  2. Step 2: Convert to fraction form
    20,518.22/28,315.86 = 11,566.10/x
  3. Step 3: Cross multiply
    20,518.22x = 28,315.86 × 11,566.10
  4. Step 4: Simplify right side
    20,518.22x = 327,504,068.35
  5. Step 5: Solve for x
    x = 327,504,068.35/20,518.22
  6. Step 6: Final answer
    x = 15,961.62

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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.