Home / 27,631.35-38,163.24-20,111.40

Finding the Fourth Proportional to 27,631.35, 38,163.24 and 20,111.40

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Solution

The fourth proportional to 27,631.35, 38,163.24 and 20,111.40 is: 27,777.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,631.35 : 38,163.24 = 20,111.40 : x
  2. Step 2: Convert to fraction form
    27,631.35/38,163.24 = 20,111.40/x
  3. Step 3: Cross multiply
    27,631.35x = 38,163.24 × 20,111.40
  4. Step 4: Simplify right side
    27,631.35x = 767,516,184.94
  5. Step 5: Solve for x
    x = 767,516,184.94/27,631.35
  6. Step 6: Final answer
    x = 27,777.01

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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.