Home / 20,215.45-27,889.72-20,184.33

Finding the Fourth Proportional to 20,215.45, 27,889.72 and 20,184.33

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Solution

The fourth proportional to 20,215.45, 27,889.72 and 20,184.33 is: 27,846.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.45 : 27,889.72 = 20,184.33 : x
  2. Step 2: Convert to fraction form
    20,215.45/27,889.72 = 20,184.33/x
  3. Step 3: Cross multiply
    20,215.45x = 27,889.72 × 20,184.33
  4. Step 4: Simplify right side
    20,215.45x = 562,935,312.09
  5. Step 5: Solve for x
    x = 562,935,312.09/20,215.45
  6. Step 6: Final answer
    x = 27,846.79

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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.