Home / 27,780.63-38,337.53-15,205.65

Finding the Fourth Proportional to 27,780.63, 38,337.53 and 15,205.65

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Solution

The fourth proportional to 27,780.63, 38,337.53 and 15,205.65 is: 20,983.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.63 : 38,337.53 = 15,205.65 : x
  2. Step 2: Convert to fraction form
    27,780.63/38,337.53 = 15,205.65/x
  3. Step 3: Cross multiply
    27,780.63x = 38,337.53 × 15,205.65
  4. Step 4: Simplify right side
    27,780.63x = 582,947,063.04
  5. Step 5: Solve for x
    x = 582,947,063.04/27,780.63
  6. Step 6: Final answer
    x = 20,983.94

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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.