Home / 19,780.18-27,295.78-10,827.85

Finding the Fourth Proportional to 19,780.18, 27,295.78 and 10,827.85

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Solution

The fourth proportional to 19,780.18, 27,295.78 and 10,827.85 is: 14,941.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.18 : 27,295.78 = 10,827.85 : x
  2. Step 2: Convert to fraction form
    19,780.18/27,295.78 = 10,827.85/x
  3. Step 3: Cross multiply
    19,780.18x = 27,295.78 × 10,827.85
  4. Step 4: Simplify right side
    19,780.18x = 295,554,611.47
  5. Step 5: Solve for x
    x = 295,554,611.47/19,780.18
  6. Step 6: Final answer
    x = 14,941.96

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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.