Home / 19,880.50-27,434.01-11,921.26

Finding the Fourth Proportional to 19,880.50, 27,434.01 and 11,921.26

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Solution

The fourth proportional to 19,880.50, 27,434.01 and 11,921.26 is: 16,450.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.50 : 27,434.01 = 11,921.26 : x
  2. Step 2: Convert to fraction form
    19,880.50/27,434.01 = 11,921.26/x
  3. Step 3: Cross multiply
    19,880.50x = 27,434.01 × 11,921.26
  4. Step 4: Simplify right side
    19,880.50x = 327,047,966.05
  5. Step 5: Solve for x
    x = 327,047,966.05/19,880.50
  6. Step 6: Final answer
    x = 16,450.69

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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.