Home / 21,909.19-30,234.68-11,837.63

Finding the Fourth Proportional to 21,909.19, 30,234.68 and 11,837.63

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Solution

The fourth proportional to 21,909.19, 30,234.68 and 11,837.63 is: 16,335.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.19 : 30,234.68 = 11,837.63 : x
  2. Step 2: Convert to fraction form
    21,909.19/30,234.68 = 11,837.63/x
  3. Step 3: Cross multiply
    21,909.19x = 30,234.68 × 11,837.63
  4. Step 4: Simplify right side
    21,909.19x = 357,907,030.60
  5. Step 5: Solve for x
    x = 357,907,030.60/21,909.19
  6. Step 6: Final answer
    x = 16,335.93

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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.