Home / 19,489.68-26,874.99-15,708.87

Finding the Fourth Proportional to 19,489.68, 26,874.99 and 15,708.87

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Solution

The fourth proportional to 19,489.68, 26,874.99 and 15,708.87 is: 21,661.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,489.68 : 26,874.99 = 15,708.87 : x
  2. Step 2: Convert to fraction form
    19,489.68/26,874.99 = 15,708.87/x
  3. Step 3: Cross multiply
    19,489.68x = 26,874.99 × 15,708.87
  4. Step 4: Simplify right side
    19,489.68x = 422,175,724.16
  5. Step 5: Solve for x
    x = 422,175,724.16/19,489.68
  6. Step 6: Final answer
    x = 21,661.50

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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.