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Finding the Fourth Proportional to 12,665.88, 19,000.08 and 10,347.84

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Solution

The fourth proportional to 12,665.88, 19,000.08 and 10,347.84 is: 15,522.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.88 : 19,000.08 = 10,347.84 : x
  2. Step 2: Convert to fraction form
    12,665.88/19,000.08 = 10,347.84/x
  3. Step 3: Cross multiply
    12,665.88x = 19,000.08 × 10,347.84
  4. Step 4: Simplify right side
    12,665.88x = 196,609,787.83
  5. Step 5: Solve for x
    x = 196,609,787.83/12,665.88
  6. Step 6: Final answer
    x = 15,522.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.