Home / 19,310.40-26,660.64-13,270.56

Finding the Fourth Proportional to 19,310.40, 26,660.64 and 13,270.56

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Solution

The fourth proportional to 19,310.40, 26,660.64 and 13,270.56 is: 18,321.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,310.40 : 26,660.64 = 13,270.56 : x
  2. Step 2: Convert to fraction form
    19,310.40/26,660.64 = 13,270.56/x
  3. Step 3: Cross multiply
    19,310.40x = 26,660.64 × 13,270.56
  4. Step 4: Simplify right side
    19,310.40x = 353,801,622.76
  5. Step 5: Solve for x
    x = 353,801,622.76/19,310.40
  6. Step 6: Final answer
    x = 18,321.82

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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.