Home / 27,781.19-38,336.56-15,203.51

Finding the Fourth Proportional to 27,781.19, 38,336.56 and 15,203.51

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Solution

The fourth proportional to 27,781.19, 38,336.56 and 15,203.51 is: 20,980.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.19 : 38,336.56 = 15,203.51 : x
  2. Step 2: Convert to fraction form
    27,781.19/38,336.56 = 15,203.51/x
  3. Step 3: Cross multiply
    27,781.19x = 38,336.56 × 15,203.51
  4. Step 4: Simplify right side
    27,781.19x = 582,850,081.64
  5. Step 5: Solve for x
    x = 582,850,081.64/27,781.19
  6. Step 6: Final answer
    x = 20,980.03

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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.