Home / 11,345.08-15,652.83-8,979.88

Finding the Fourth Proportional to 11,345.08, 15,652.83 and 8,979.88

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Solution

The fourth proportional to 11,345.08, 15,652.83 and 8,979.88 is: 12,389.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,345.08 : 15,652.83 = 8,979.88 : x
  2. Step 2: Convert to fraction form
    11,345.08/15,652.83 = 8,979.88/x
  3. Step 3: Cross multiply
    11,345.08x = 15,652.83 × 8,979.88
  4. Step 4: Simplify right side
    11,345.08x = 140,560,535.06
  5. Step 5: Solve for x
    x = 140,560,535.06/11,345.08
  6. Step 6: Final answer
    x = 12,389.56

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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.