Home / 27,780.73-38,336.43-15,847.89

Finding the Fourth Proportional to 27,780.73, 38,336.43 and 15,847.89

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Solution

The fourth proportional to 27,780.73, 38,336.43 and 15,847.89 is: 21,869.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.73 : 38,336.43 = 15,847.89 : x
  2. Step 2: Convert to fraction form
    27,780.73/38,336.43 = 15,847.89/x
  3. Step 3: Cross multiply
    27,780.73x = 38,336.43 × 15,847.89
  4. Step 4: Simplify right side
    27,780.73x = 607,551,525.63
  5. Step 5: Solve for x
    x = 607,551,525.63/27,780.73
  6. Step 6: Final answer
    x = 21,869.53

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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.