Home / 19,759.54-27,221.50-13,780.53

Finding the Fourth Proportional to 19,759.54, 27,221.50 and 13,780.53

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Solution

The fourth proportional to 19,759.54, 27,221.50 and 13,780.53 is: 18,984.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,759.54 : 27,221.50 = 13,780.53 : x
  2. Step 2: Convert to fraction form
    19,759.54/27,221.50 = 13,780.53/x
  3. Step 3: Cross multiply
    19,759.54x = 27,221.50 × 13,780.53
  4. Step 4: Simplify right side
    19,759.54x = 375,126,561.29
  5. Step 5: Solve for x
    x = 375,126,561.29/19,759.54
  6. Step 6: Final answer
    x = 18,984.58

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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.