Home / 20,071.28-27,698.57-11,118.91

Finding the Fourth Proportional to 20,071.28, 27,698.57 and 11,118.91

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Solution

The fourth proportional to 20,071.28, 27,698.57 and 11,118.91 is: 15,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.28 : 27,698.57 = 11,118.91 : x
  2. Step 2: Convert to fraction form
    20,071.28/27,698.57 = 11,118.91/x
  3. Step 3: Cross multiply
    20,071.28x = 27,698.57 × 11,118.91
  4. Step 4: Simplify right side
    20,071.28x = 307,977,712.87
  5. Step 5: Solve for x
    x = 307,977,712.87/20,071.28
  6. Step 6: Final answer
    x = 15,344.20

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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.