Home / 20,583.19-28,404.89-11,151.75

Finding the Fourth Proportional to 20,583.19, 28,404.89 and 11,151.75

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Solution

The fourth proportional to 20,583.19, 28,404.89 and 11,151.75 is: 15,389.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.19 : 28,404.89 = 11,151.75 : x
  2. Step 2: Convert to fraction form
    20,583.19/28,404.89 = 11,151.75/x
  3. Step 3: Cross multiply
    20,583.19x = 28,404.89 × 11,151.75
  4. Step 4: Simplify right side
    20,583.19x = 316,764,232.06
  5. Step 5: Solve for x
    x = 316,764,232.06/20,583.19
  6. Step 6: Final answer
    x = 15,389.46

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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.