Home / 27,780.57-38,336.76-15,205.32

Finding the Fourth Proportional to 27,780.57, 38,336.76 and 15,205.32

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Solution

The fourth proportional to 27,780.57, 38,336.76 and 15,205.32 is: 20,983.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.57 : 38,336.76 = 15,205.32 : x
  2. Step 2: Convert to fraction form
    27,780.57/38,336.76 = 15,205.32/x
  3. Step 3: Cross multiply
    27,780.57x = 38,336.76 × 15,205.32
  4. Step 4: Simplify right side
    27,780.57x = 582,922,703.56
  5. Step 5: Solve for x
    x = 582,922,703.56/27,780.57
  6. Step 6: Final answer
    x = 20,983.11

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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.