Home / 27,884.84-38,474.46-15,785.48

Finding the Fourth Proportional to 27,884.84, 38,474.46 and 15,785.48

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Solution

The fourth proportional to 27,884.84, 38,474.46 and 15,785.48 is: 21,780.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,884.84 : 38,474.46 = 15,785.48 : x
  2. Step 2: Convert to fraction form
    27,884.84/38,474.46 = 15,785.48/x
  3. Step 3: Cross multiply
    27,884.84x = 38,474.46 × 15,785.48
  4. Step 4: Simplify right side
    27,884.84x = 607,337,818.84
  5. Step 5: Solve for x
    x = 607,337,818.84/27,884.84
  6. Step 6: Final answer
    x = 21,780.22

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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.