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Finding the Fourth Proportional to 14,454.78, 19,948.06 and 8,167.56

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Solution

The fourth proportional to 14,454.78, 19,948.06 and 8,167.56 is: 11,271.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,454.78 : 19,948.06 = 8,167.56 : x
  2. Step 2: Convert to fraction form
    14,454.78/19,948.06 = 8,167.56/x
  3. Step 3: Cross multiply
    14,454.78x = 19,948.06 × 8,167.56
  4. Step 4: Simplify right side
    14,454.78x = 162,926,976.93
  5. Step 5: Solve for x
    x = 162,926,976.93/14,454.78
  6. Step 6: Final answer
    x = 11,271.49

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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.