Home / 21,219.63-31,956.39-19,327.96

Finding the Fourth Proportional to 21,219.63, 31,956.39 and 19,327.96

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Solution

The fourth proportional to 21,219.63, 31,956.39 and 19,327.96 is: 29,107.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.63 : 31,956.39 = 19,327.96 : x
  2. Step 2: Convert to fraction form
    21,219.63/31,956.39 = 19,327.96/x
  3. Step 3: Cross multiply
    21,219.63x = 31,956.39 × 19,327.96
  4. Step 4: Simplify right side
    21,219.63x = 617,651,731.02
  5. Step 5: Solve for x
    x = 617,651,731.02/21,219.63
  6. Step 6: Final answer
    x = 29,107.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.