Home / 20,682.22-28,541.75-11,250.78

Finding the Fourth Proportional to 20,682.22, 28,541.75 and 11,250.78

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Solution

The fourth proportional to 20,682.22, 28,541.75 and 11,250.78 is: 15,526.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.22 : 28,541.75 = 11,250.78 : x
  2. Step 2: Convert to fraction form
    20,682.22/28,541.75 = 11,250.78/x
  3. Step 3: Cross multiply
    20,682.22x = 28,541.75 × 11,250.78
  4. Step 4: Simplify right side
    20,682.22x = 321,116,950.07
  5. Step 5: Solve for x
    x = 321,116,950.07/20,682.22
  6. Step 6: Final answer
    x = 15,526.23

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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.