Home / 21,203.37-31,805.07-12,433.50

Finding the Fourth Proportional to 21,203.37, 31,805.07 and 12,433.50

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Solution

The fourth proportional to 21,203.37, 31,805.07 and 12,433.50 is: 18,650.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.37 : 31,805.07 = 12,433.50 : x
  2. Step 2: Convert to fraction form
    21,203.37/31,805.07 = 12,433.50/x
  3. Step 3: Cross multiply
    21,203.37x = 31,805.07 × 12,433.50
  4. Step 4: Simplify right side
    21,203.37x = 395,448,337.85
  5. Step 5: Solve for x
    x = 395,448,337.85/21,203.37
  6. Step 6: Final answer
    x = 18,650.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.