Home / 21,213.66-31,833.63-12,333.17

Finding the Fourth Proportional to 21,213.66, 31,833.63 and 12,333.17

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Solution

The fourth proportional to 21,213.66, 31,833.63 and 12,333.17 is: 18,507.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.66 : 31,833.63 = 12,333.17 : x
  2. Step 2: Convert to fraction form
    21,213.66/31,833.63 = 12,333.17/x
  3. Step 3: Cross multiply
    21,213.66x = 31,833.63 × 12,333.17
  4. Step 4: Simplify right side
    21,213.66x = 392,609,601.34
  5. Step 5: Solve for x
    x = 392,609,601.34/21,213.66
  6. Step 6: Final answer
    x = 18,507.39

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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.