Home / 15,858.57-21,872.20-10,193.90

Finding the Fourth Proportional to 15,858.57, 21,872.20 and 10,193.90

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Solution

The fourth proportional to 15,858.57, 21,872.20 and 10,193.90 is: 14,059.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858.57 : 21,872.20 = 10,193.90 : x
  2. Step 2: Convert to fraction form
    15,858.57/21,872.20 = 10,193.90/x
  3. Step 3: Cross multiply
    15,858.57x = 21,872.20 × 10,193.90
  4. Step 4: Simplify right side
    15,858.57x = 222,963,055.55
  5. Step 5: Solve for x
    x = 222,963,055.55/15,858.57
  6. Step 6: Final answer
    x = 14,059.47

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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.