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Finding the Fourth Proportional to 12,543.93, 17,310.24 and 6,878.39

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Solution

The fourth proportional to 12,543.93, 17,310.24 and 6,878.39 is: 9,491.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.93 : 17,310.24 = 6,878.39 : x
  2. Step 2: Convert to fraction form
    12,543.93/17,310.24 = 6,878.39/x
  3. Step 3: Cross multiply
    12,543.93x = 17,310.24 × 6,878.39
  4. Step 4: Simplify right side
    12,543.93x = 119,066,495.16
  5. Step 5: Solve for x
    x = 119,066,495.16/12,543.93
  6. Step 6: Final answer
    x = 9,491.96

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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.