Home / 21,091.14-28,715.76-21,025.53

Finding the Fourth Proportional to 21,091.14, 28,715.76 and 21,025.53

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Solution

The fourth proportional to 21,091.14, 28,715.76 and 21,025.53 is: 28,626.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.14 : 28,715.76 = 21,025.53 : x
  2. Step 2: Convert to fraction form
    21,091.14/28,715.76 = 21,025.53/x
  3. Step 3: Cross multiply
    21,091.14x = 28,715.76 × 21,025.53
  4. Step 4: Simplify right side
    21,091.14x = 603,764,073.35
  5. Step 5: Solve for x
    x = 603,764,073.35/21,091.14
  6. Step 6: Final answer
    x = 28,626.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.