Home / 19,655.88-27,151.65-15,704.70

Finding the Fourth Proportional to 19,655.88, 27,151.65 and 15,704.70

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Solution

The fourth proportional to 19,655.88, 27,151.65 and 15,704.70 is: 21,693.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,655.88 : 27,151.65 = 15,704.70 : x
  2. Step 2: Convert to fraction form
    19,655.88/27,151.65 = 15,704.70/x
  3. Step 3: Cross multiply
    19,655.88x = 27,151.65 × 15,704.70
  4. Step 4: Simplify right side
    19,655.88x = 426,408,517.76
  5. Step 5: Solve for x
    x = 426,408,517.76/19,655.88
  6. Step 6: Final answer
    x = 21,693.69

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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.