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Finding the Fourth Proportional to 16,878.74, 25,212.86 and 12,504.74

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Solution

The fourth proportional to 16,878.74, 25,212.86 and 12,504.74 is: 18,679.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,878.74 : 25,212.86 = 12,504.74 : x
  2. Step 2: Convert to fraction form
    16,878.74/25,212.86 = 12,504.74/x
  3. Step 3: Cross multiply
    16,878.74x = 25,212.86 × 12,504.74
  4. Step 4: Simplify right side
    16,878.74x = 315,280,117.26
  5. Step 5: Solve for x
    x = 315,280,117.26/16,878.74
  6. Step 6: Final answer
    x = 18,679.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.