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Finding the Fourth Proportional to 12,578.66, 17,358.71 and 6,914.03

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Solution

The fourth proportional to 12,578.66, 17,358.71 and 6,914.03 is: 9,541.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.66 : 17,358.71 = 6,914.03 : x
  2. Step 2: Convert to fraction form
    12,578.66/17,358.71 = 6,914.03/x
  3. Step 3: Cross multiply
    12,578.66x = 17,358.71 × 6,914.03
  4. Step 4: Simplify right side
    12,578.66x = 120,018,554.91
  5. Step 5: Solve for x
    x = 120,018,554.91/12,578.66
  6. Step 6: Final answer
    x = 9,541.44

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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.