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Finding the Fourth Proportional to 12,415.16, 17,133.06 and 6,749.90

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Solution

The fourth proportional to 12,415.16, 17,133.06 and 6,749.90 is: 9,314.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.16 : 17,133.06 = 6,749.90 : x
  2. Step 2: Convert to fraction form
    12,415.16/17,133.06 = 6,749.90/x
  3. Step 3: Cross multiply
    12,415.16x = 17,133.06 × 6,749.90
  4. Step 4: Simplify right side
    12,415.16x = 115,646,441.69
  5. Step 5: Solve for x
    x = 115,646,441.69/12,415.16
  6. Step 6: Final answer
    x = 9,314.94

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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.