Home / 27,979.46-38,611.53-15,404.20

Finding the Fourth Proportional to 27,979.46, 38,611.53 and 15,404.20

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Solution

The fourth proportional to 27,979.46, 38,611.53 and 15,404.20 is: 21,257.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.46 : 38,611.53 = 15,404.20 : x
  2. Step 2: Convert to fraction form
    27,979.46/38,611.53 = 15,404.20/x
  3. Step 3: Cross multiply
    27,979.46x = 38,611.53 × 15,404.20
  4. Step 4: Simplify right side
    27,979.46x = 594,779,730.43
  5. Step 5: Solve for x
    x = 594,779,730.43/27,979.46
  6. Step 6: Final answer
    x = 21,257.73

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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.