Home / 21,113.10-31,669.74-11,767.32

Finding the Fourth Proportional to 21,113.10, 31,669.74 and 11,767.32

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Solution

The fourth proportional to 21,113.10, 31,669.74 and 11,767.32 is: 17,651.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.10 : 31,669.74 = 11,767.32 : x
  2. Step 2: Convert to fraction form
    21,113.10/31,669.74 = 11,767.32/x
  3. Step 3: Cross multiply
    21,113.10x = 31,669.74 × 11,767.32
  4. Step 4: Simplify right side
    21,113.10x = 372,667,964.90
  5. Step 5: Solve for x
    x = 372,667,964.90/21,113.10
  6. Step 6: Final answer
    x = 17,651.03

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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.