Home / 27,830.66-38,404.92-15,730.88

Finding the Fourth Proportional to 27,830.66, 38,404.92 and 15,730.88

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Solution

The fourth proportional to 27,830.66, 38,404.92 and 15,730.88 is: 21,707.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,830.66 : 38,404.92 = 15,730.88 : x
  2. Step 2: Convert to fraction form
    27,830.66/38,404.92 = 15,730.88/x
  3. Step 3: Cross multiply
    27,830.66x = 38,404.92 × 15,730.88
  4. Step 4: Simplify right side
    27,830.66x = 604,143,187.93
  5. Step 5: Solve for x
    x = 604,143,187.93/27,830.66
  6. Step 6: Final answer
    x = 21,707.83

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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.