Home / 15,383.94-21,230.26-9,415.50

Finding the Fourth Proportional to 15,383.94, 21,230.26 and 9,415.50

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Solution

The fourth proportional to 15,383.94, 21,230.26 and 9,415.50 is: 12,993.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.94 : 21,230.26 = 9,415.50 : x
  2. Step 2: Convert to fraction form
    15,383.94/21,230.26 = 9,415.50/x
  3. Step 3: Cross multiply
    15,383.94x = 21,230.26 × 9,415.50
  4. Step 4: Simplify right side
    15,383.94x = 199,893,513.03
  5. Step 5: Solve for x
    x = 199,893,513.03/15,383.94
  6. Step 6: Final answer
    x = 12,993.65

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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.