Home / 27,979.83-38,612.14-15,404.58

Finding the Fourth Proportional to 27,979.83, 38,612.14 and 15,404.58

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Solution

The fourth proportional to 27,979.83, 38,612.14 and 15,404.58 is: 21,258.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.83 : 38,612.14 = 15,404.58 : x
  2. Step 2: Convert to fraction form
    27,979.83/38,612.14 = 15,404.58/x
  3. Step 3: Cross multiply
    27,979.83x = 38,612.14 × 15,404.58
  4. Step 4: Simplify right side
    27,979.83x = 594,803,847.74
  5. Step 5: Solve for x
    x = 594,803,847.74/27,979.83
  6. Step 6: Final answer
    x = 21,258.31

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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.