Home / 27,900.88-38,477.46-18,961.72

Finding the Fourth Proportional to 27,900.88, 38,477.46 and 18,961.72

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Solution

The fourth proportional to 27,900.88, 38,477.46 and 18,961.72 is: 26,149.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,900.88 : 38,477.46 = 18,961.72 : x
  2. Step 2: Convert to fraction form
    27,900.88/38,477.46 = 18,961.72/x
  3. Step 3: Cross multiply
    27,900.88x = 38,477.46 × 18,961.72
  4. Step 4: Simplify right side
    27,900.88x = 729,598,822.83
  5. Step 5: Solve for x
    x = 729,598,822.83/27,900.88
  6. Step 6: Final answer
    x = 26,149.67

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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.