Home / 18,651.06-27,979.32-5,501.72

Finding the Fourth Proportional to 18,651.06, 27,979.32 and 5,501.72

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Solution

The fourth proportional to 18,651.06, 27,979.32 and 5,501.72 is: 8,253.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.06 : 27,979.32 = 5,501.72 : x
  2. Step 2: Convert to fraction form
    18,651.06/27,979.32 = 5,501.72/x
  3. Step 3: Cross multiply
    18,651.06x = 27,979.32 × 5,501.72
  4. Step 4: Simplify right side
    18,651.06x = 153,934,384.43
  5. Step 5: Solve for x
    x = 153,934,384.43/18,651.06
  6. Step 6: Final answer
    x = 8,253.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.