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Finding the Fourth Proportional to 15,978.54, 22,050.54 and 8,808.71

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Solution

The fourth proportional to 15,978.54, 22,050.54 and 8,808.71 is: 12,156.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.54 : 22,050.54 = 8,808.71 : x
  2. Step 2: Convert to fraction form
    15,978.54/22,050.54 = 8,808.71/x
  3. Step 3: Cross multiply
    15,978.54x = 22,050.54 × 8,808.71
  4. Step 4: Simplify right side
    15,978.54x = 194,236,867.33
  5. Step 5: Solve for x
    x = 194,236,867.33/15,978.54
  6. Step 6: Final answer
    x = 12,156.11

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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.