Home / 19,238.70-26,490.19-16,399.71

Finding the Fourth Proportional to 19,238.70, 26,490.19 and 16,399.71

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Solution

The fourth proportional to 19,238.70, 26,490.19 and 16,399.71 is: 22,581.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,238.70 : 26,490.19 = 16,399.71 : x
  2. Step 2: Convert to fraction form
    19,238.70/26,490.19 = 16,399.71/x
  3. Step 3: Cross multiply
    19,238.70x = 26,490.19 × 16,399.71
  4. Step 4: Simplify right side
    19,238.70x = 434,431,433.84
  5. Step 5: Solve for x
    x = 434,431,433.84/19,238.70
  6. Step 6: Final answer
    x = 22,581.12

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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.