Home / 28,168.29-38,880-16,845.57

Finding the Fourth Proportional to 28,168.29, 38,880 and 16,845.57

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Solution

The fourth proportional to 28,168.29, 38,880 and 16,845.57 is: 23,251.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.29 : 38,880 = 16,845.57 : x
  2. Step 2: Convert to fraction form
    28,168.29/38,880 = 16,845.57/x
  3. Step 3: Cross multiply
    28,168.29x = 38,880 × 16,845.57
  4. Step 4: Simplify right side
    28,168.29x = 654,955,761.60
  5. Step 5: Solve for x
    x = 654,955,761.60/28,168.29
  6. Step 6: Final answer
    x = 23,251.53

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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.