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Finding the Fourth Proportional to 28,934, 39,931.38 and 16,361.18

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Solution

The fourth proportional to 28,934, 39,931.38 and 16,361.18 is: 22,579.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,934 : 39,931.38 = 16,361.18 : x
  2. Step 2: Convert to fraction form
    28,934/39,931.38 = 16,361.18/x
  3. Step 3: Cross multiply
    28,934x = 39,931.38 × 16,361.18
  4. Step 4: Simplify right side
    28,934x = 653,324,495.83
  5. Step 5: Solve for x
    x = 653,324,495.83/28,934
  6. Step 6: Final answer
    x = 22,579.82

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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.