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Finding the Fourth Proportional to 12,476.10, 17,211 and 7,438.74

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Solution

The fourth proportional to 12,476.10, 17,211 and 7,438.74 is: 10,261.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.10 : 17,211 = 7,438.74 : x
  2. Step 2: Convert to fraction form
    12,476.10/17,211 = 7,438.74/x
  3. Step 3: Cross multiply
    12,476.10x = 17,211 × 7,438.74
  4. Step 4: Simplify right side
    12,476.10x = 128,028,154.14
  5. Step 5: Solve for x
    x = 128,028,154.14/12,476.10
  6. Step 6: Final answer
    x = 10,261.87

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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.