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Finding the Fourth Proportional to 12,476.88, 18,709.05 and 4,153.98

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Solution

The fourth proportional to 12,476.88, 18,709.05 and 4,153.98 is: 6,228.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.88 : 18,709.05 = 4,153.98 : x
  2. Step 2: Convert to fraction form
    12,476.88/18,709.05 = 4,153.98/x
  3. Step 3: Cross multiply
    12,476.88x = 18,709.05 × 4,153.98
  4. Step 4: Simplify right side
    12,476.88x = 77,717,019.52
  5. Step 5: Solve for x
    x = 77,717,019.52/12,476.88
  6. Step 6: Final answer
    x = 6,228.88

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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.