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Finding the Fourth Proportional to 15,874.08, 21,906 and 8,800.32

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Solution

The fourth proportional to 15,874.08, 21,906 and 8,800.32 is: 12,144.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,874.08 : 21,906 = 8,800.32 : x
  2. Step 2: Convert to fraction form
    15,874.08/21,906 = 8,800.32/x
  3. Step 3: Cross multiply
    15,874.08x = 21,906 × 8,800.32
  4. Step 4: Simplify right side
    15,874.08x = 192,779,809.92
  5. Step 5: Solve for x
    x = 192,779,809.92/15,874.08
  6. Step 6: Final answer
    x = 12,144.31

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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.