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Finding the Fourth Proportional to 12,976.13, 17,907.08 and 7,387.13

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Solution

The fourth proportional to 12,976.13, 17,907.08 and 7,387.13 is: 10,194.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.13 : 17,907.08 = 7,387.13 : x
  2. Step 2: Convert to fraction form
    12,976.13/17,907.08 = 7,387.13/x
  3. Step 3: Cross multiply
    12,976.13x = 17,907.08 × 7,387.13
  4. Step 4: Simplify right side
    12,976.13x = 132,281,801.41
  5. Step 5: Solve for x
    x = 132,281,801.41/12,976.13
  6. Step 6: Final answer
    x = 10,194.25

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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.