Home / 27,979.52-38,612.18-15,404.27

Finding the Fourth Proportional to 27,979.52, 38,612.18 and 15,404.27

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Solution

The fourth proportional to 27,979.52, 38,612.18 and 15,404.27 is: 21,258.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.52 : 38,612.18 = 15,404.27 : x
  2. Step 2: Convert to fraction form
    27,979.52/38,612.18 = 15,404.27/x
  3. Step 3: Cross multiply
    27,979.52x = 38,612.18 × 15,404.27
  4. Step 4: Simplify right side
    27,979.52x = 594,792,368.99
  5. Step 5: Solve for x
    x = 594,792,368.99/27,979.52
  6. Step 6: Final answer
    x = 21,258.13

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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.