Home / 15,979.78-22,050.51-8,905.44

Finding the Fourth Proportional to 15,979.78, 22,050.51 and 8,905.44

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Solution

The fourth proportional to 15,979.78, 22,050.51 and 8,905.44 is: 12,288.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,979.78 : 22,050.51 = 8,905.44 : x
  2. Step 2: Convert to fraction form
    15,979.78/22,050.51 = 8,905.44/x
  3. Step 3: Cross multiply
    15,979.78x = 22,050.51 × 8,905.44
  4. Step 4: Simplify right side
    15,979.78x = 196,369,493.77
  5. Step 5: Solve for x
    x = 196,369,493.77/15,979.78
  6. Step 6: Final answer
    x = 12,288.63

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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.