Home / 15,622.59-21,536.75-11,138.56

Finding the Fourth Proportional to 15,622.59, 21,536.75 and 11,138.56

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Solution

The fourth proportional to 15,622.59, 21,536.75 and 11,138.56 is: 15,355.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,622.59 : 21,536.75 = 11,138.56 : x
  2. Step 2: Convert to fraction form
    15,622.59/21,536.75 = 11,138.56/x
  3. Step 3: Cross multiply
    15,622.59x = 21,536.75 × 11,138.56
  4. Step 4: Simplify right side
    15,622.59x = 239,888,382.08
  5. Step 5: Solve for x
    x = 239,888,382.08/15,622.59
  6. Step 6: Final answer
    x = 15,355.22

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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.