Home / 15,533.78-21,452.65-11,961.68

Finding the Fourth Proportional to 15,533.78, 21,452.65 and 11,961.68

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Solution

The fourth proportional to 15,533.78, 21,452.65 and 11,961.68 is: 16,519.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.78 : 21,452.65 = 11,961.68 : x
  2. Step 2: Convert to fraction form
    15,533.78/21,452.65 = 11,961.68/x
  3. Step 3: Cross multiply
    15,533.78x = 21,452.65 × 11,961.68
  4. Step 4: Simplify right side
    15,533.78x = 256,609,597.28
  5. Step 5: Solve for x
    x = 256,609,597.28/15,533.78
  6. Step 6: Final answer
    x = 16,519.46

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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.