Home / 15,911.31-21,961.58-9,200.82

Finding the Fourth Proportional to 15,911.31, 21,961.58 and 9,200.82

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Solution

The fourth proportional to 15,911.31, 21,961.58 and 9,200.82 is: 12,699.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.31 : 21,961.58 = 9,200.82 : x
  2. Step 2: Convert to fraction form
    15,911.31/21,961.58 = 9,200.82/x
  3. Step 3: Cross multiply
    15,911.31x = 21,961.58 × 9,200.82
  4. Step 4: Simplify right side
    15,911.31x = 202,064,498.49
  5. Step 5: Solve for x
    x = 202,064,498.49/15,911.31
  6. Step 6: Final answer
    x = 12,699.43

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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.