Home / 15,201.34-20,979.71-8,826.54

Finding the Fourth Proportional to 15,201.34, 20,979.71 and 8,826.54

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Solution

The fourth proportional to 15,201.34, 20,979.71 and 8,826.54 is: 12,181.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,201.34 : 20,979.71 = 8,826.54 : x
  2. Step 2: Convert to fraction form
    15,201.34/20,979.71 = 8,826.54/x
  3. Step 3: Cross multiply
    15,201.34x = 20,979.71 × 8,826.54
  4. Step 4: Simplify right side
    15,201.34x = 185,178,159.80
  5. Step 5: Solve for x
    x = 185,178,159.80/15,201.34
  6. Step 6: Final answer
    x = 12,181.70

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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.