Home / 27,908.21-38,513.40-16,420.16

Finding the Fourth Proportional to 27,908.21, 38,513.40 and 16,420.16

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Solution

The fourth proportional to 27,908.21, 38,513.40 and 16,420.16 is: 22,659.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,908.21 : 38,513.40 = 16,420.16 : x
  2. Step 2: Convert to fraction form
    27,908.21/38,513.40 = 16,420.16/x
  3. Step 3: Cross multiply
    27,908.21x = 38,513.40 × 16,420.16
  4. Step 4: Simplify right side
    27,908.21x = 632,396,190.14
  5. Step 5: Solve for x
    x = 632,396,190.14/27,908.21
  6. Step 6: Final answer
    x = 22,659.86

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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.