Home / 19,793.79-27,312.89-15,770.82

Finding the Fourth Proportional to 19,793.79, 27,312.89 and 15,770.82

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Solution

The fourth proportional to 19,793.79, 27,312.89 and 15,770.82 is: 21,761.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,793.79 : 27,312.89 = 15,770.82 : x
  2. Step 2: Convert to fraction form
    19,793.79/27,312.89 = 15,770.82/x
  3. Step 3: Cross multiply
    19,793.79x = 27,312.89 × 15,770.82
  4. Step 4: Simplify right side
    19,793.79x = 430,746,671.87
  5. Step 5: Solve for x
    x = 430,746,671.87/19,793.79
  6. Step 6: Final answer
    x = 21,761.71

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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.