Home / 19,800.72-27,315.09-11,840.85

Finding the Fourth Proportional to 19,800.72, 27,315.09 and 11,840.85

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Solution

The fourth proportional to 19,800.72, 27,315.09 and 11,840.85 is: 16,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,800.72 : 27,315.09 = 11,840.85 : x
  2. Step 2: Convert to fraction form
    19,800.72/27,315.09 = 11,840.85/x
  3. Step 3: Cross multiply
    19,800.72x = 27,315.09 × 11,840.85
  4. Step 4: Simplify right side
    19,800.72x = 323,433,883.43
  5. Step 5: Solve for x
    x = 323,433,883.43/19,800.72
  6. Step 6: Final answer
    x = 16,334.45

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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.