Home / 12,415.32-17,127.30-7,107.12

Finding the Fourth Proportional to 12,415.32, 17,127.30 and 7,107.12

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Solution

The fourth proportional to 12,415.32, 17,127.30 and 7,107.12 is: 9,804.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.32 : 17,127.30 = 7,107.12 : x
  2. Step 2: Convert to fraction form
    12,415.32/17,127.30 = 7,107.12/x
  3. Step 3: Cross multiply
    12,415.32x = 17,127.30 × 7,107.12
  4. Step 4: Simplify right side
    12,415.32x = 121,725,776.38
  5. Step 5: Solve for x
    x = 121,725,776.38/12,415.32
  6. Step 6: Final answer
    x = 9,804.48

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Half scale
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Double scale
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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.