Home / 18,426.68-27,639.90-5,279.08

Finding the Fourth Proportional to 18,426.68, 27,639.90 and 5,279.08

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Solution

The fourth proportional to 18,426.68, 27,639.90 and 5,279.08 is: 7,918.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.68 : 27,639.90 = 5,279.08 : x
  2. Step 2: Convert to fraction form
    18,426.68/27,639.90 = 5,279.08/x
  3. Step 3: Cross multiply
    18,426.68x = 27,639.90 × 5,279.08
  4. Step 4: Simplify right side
    18,426.68x = 145,913,243.29
  5. Step 5: Solve for x
    x = 145,913,243.29/18,426.68
  6. Step 6: Final answer
    x = 7,918.59

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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.