Home / 27,800.85-38,367.92-15,865.98

Finding the Fourth Proportional to 27,800.85, 38,367.92 and 15,865.98

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Solution

The fourth proportional to 27,800.85, 38,367.92 and 15,865.98 is: 21,896.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,800.85 : 38,367.92 = 15,865.98 : x
  2. Step 2: Convert to fraction form
    27,800.85/38,367.92 = 15,865.98/x
  3. Step 3: Cross multiply
    27,800.85x = 38,367.92 × 15,865.98
  4. Step 4: Simplify right side
    27,800.85x = 608,744,547.15
  5. Step 5: Solve for x
    x = 608,744,547.15/27,800.85
  6. Step 6: Final answer
    x = 21,896.61

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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.