Home / 21,235.05-29,336.15-13,984.37

Finding the Fourth Proportional to 21,235.05, 29,336.15 and 13,984.37

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Solution

The fourth proportional to 21,235.05, 29,336.15 and 13,984.37 is: 19,319.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.05 : 29,336.15 = 13,984.37 : x
  2. Step 2: Convert to fraction form
    21,235.05/29,336.15 = 13,984.37/x
  3. Step 3: Cross multiply
    21,235.05x = 29,336.15 × 13,984.37
  4. Step 4: Simplify right side
    21,235.05x = 410,247,579.39
  5. Step 5: Solve for x
    x = 410,247,579.39/21,235.05
  6. Step 6: Final answer
    x = 19,319.36

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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.