Home / 19,820.88-27,353.75-11,861.64

Finding the Fourth Proportional to 19,820.88, 27,353.75 and 11,861.64

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Solution

The fourth proportional to 19,820.88, 27,353.75 and 11,861.64 is: 16,369.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.88 : 27,353.75 = 11,861.64 : x
  2. Step 2: Convert to fraction form
    19,820.88/27,353.75 = 11,861.64/x
  3. Step 3: Cross multiply
    19,820.88x = 27,353.75 × 11,861.64
  4. Step 4: Simplify right side
    19,820.88x = 324,460,275.84
  5. Step 5: Solve for x
    x = 324,460,275.84/19,820.88
  6. Step 6: Final answer
    x = 16,369.62

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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.