Home / 15,891.85-21,938.92-11,197.09

Finding the Fourth Proportional to 15,891.85, 21,938.92 and 11,197.09

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Solution

The fourth proportional to 15,891.85, 21,938.92 and 11,197.09 is: 15,457.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.85 : 21,938.92 = 11,197.09 : x
  2. Step 2: Convert to fraction form
    15,891.85/21,938.92 = 11,197.09/x
  3. Step 3: Cross multiply
    15,891.85x = 21,938.92 × 11,197.09
  4. Step 4: Simplify right side
    15,891.85x = 245,652,130.59
  5. Step 5: Solve for x
    x = 245,652,130.59/15,891.85
  6. Step 6: Final answer
    x = 15,457.74

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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.