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Finding the Fourth Proportional to 13,714.08, 18,925.05 and 8,125.08

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Solution

The fourth proportional to 13,714.08, 18,925.05 and 8,125.08 is: 11,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,714.08 : 18,925.05 = 8,125.08 : x
  2. Step 2: Convert to fraction form
    13,714.08/18,925.05 = 8,125.08/x
  3. Step 3: Cross multiply
    13,714.08x = 18,925.05 × 8,125.08
  4. Step 4: Simplify right side
    13,714.08x = 153,767,545.25
  5. Step 5: Solve for x
    x = 153,767,545.25/13,714.08
  6. Step 6: Final answer
    x = 11,212.39

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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.