Home / 27,824.83-38,400.14-15,721.12

Finding the Fourth Proportional to 27,824.83, 38,400.14 and 15,721.12

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Solution

The fourth proportional to 27,824.83, 38,400.14 and 15,721.12 is: 21,696.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,824.83 : 38,400.14 = 15,721.12 : x
  2. Step 2: Convert to fraction form
    27,824.83/38,400.14 = 15,721.12/x
  3. Step 3: Cross multiply
    27,824.83x = 38,400.14 × 15,721.12
  4. Step 4: Simplify right side
    27,824.83x = 603,693,296.26
  5. Step 5: Solve for x
    x = 603,693,296.26/27,824.83
  6. Step 6: Final answer
    x = 21,696.21

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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.