Home / 15,621.59-21,535.37-11,137.56

Finding the Fourth Proportional to 15,621.59, 21,535.37 and 11,137.56

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Solution

The fourth proportional to 15,621.59, 21,535.37 and 11,137.56 is: 15,353.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.59 : 21,535.37 = 11,137.56 : x
  2. Step 2: Convert to fraction form
    15,621.59/21,535.37 = 11,137.56/x
  3. Step 3: Cross multiply
    15,621.59x = 21,535.37 × 11,137.56
  4. Step 4: Simplify right side
    15,621.59x = 239,851,380.82
  5. Step 5: Solve for x
    x = 239,851,380.82/15,621.59
  6. Step 6: Final answer
    x = 15,353.84

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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.