Home / 21,895.70-30,213-12,333.96

Finding the Fourth Proportional to 21,895.70, 30,213 and 12,333.96

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Solution

The fourth proportional to 21,895.70, 30,213 and 12,333.96 is: 17,019.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,895.70 : 30,213 = 12,333.96 : x
  2. Step 2: Convert to fraction form
    21,895.70/30,213 = 12,333.96/x
  3. Step 3: Cross multiply
    21,895.70x = 30,213 × 12,333.96
  4. Step 4: Simplify right side
    21,895.70x = 372,645,933.48
  5. Step 5: Solve for x
    x = 372,645,933.48/21,895.70
  6. Step 6: Final answer
    x = 17,019.14

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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.