Home / 15,979.32-22,050.82-8,905.56

Finding the Fourth Proportional to 15,979.32, 22,050.82 and 8,905.56

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Solution

The fourth proportional to 15,979.32, 22,050.82 and 8,905.56 is: 12,289.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,979.32 : 22,050.82 = 8,905.56 : x
  2. Step 2: Convert to fraction form
    15,979.32/22,050.82 = 8,905.56/x
  3. Step 3: Cross multiply
    15,979.32x = 22,050.82 × 8,905.56
  4. Step 4: Simplify right side
    15,979.32x = 196,374,900.56
  5. Step 5: Solve for x
    x = 196,374,900.56/15,979.32
  6. Step 6: Final answer
    x = 12,289.32

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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.