Home / 27,991.16-38,628.06-15,415.96

Finding the Fourth Proportional to 27,991.16, 38,628.06 and 15,415.96

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Solution

The fourth proportional to 27,991.16, 38,628.06 and 15,415.96 is: 21,274.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.16 : 38,628.06 = 15,415.96 : x
  2. Step 2: Convert to fraction form
    27,991.16/38,628.06 = 15,415.96/x
  3. Step 3: Cross multiply
    27,991.16x = 38,628.06 × 15,415.96
  4. Step 4: Simplify right side
    27,991.16x = 595,488,627.84
  5. Step 5: Solve for x
    x = 595,488,627.84/27,991.16
  6. Step 6: Final answer
    x = 21,274.17

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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.