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Finding the Fourth Proportional to 12,473.66, 17,215.86 and 7,438.20

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Solution

The fourth proportional to 12,473.66, 17,215.86 and 7,438.20 is: 10,266.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,473.66 : 17,215.86 = 7,438.20 : x
  2. Step 2: Convert to fraction form
    12,473.66/17,215.86 = 7,438.20/x
  3. Step 3: Cross multiply
    12,473.66x = 17,215.86 × 7,438.20
  4. Step 4: Simplify right side
    12,473.66x = 128,055,009.85
  5. Step 5: Solve for x
    x = 128,055,009.85/12,473.66
  6. Step 6: Final answer
    x = 10,266.03

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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.