Home / 21,215.78-31,832.67-11,352.50

Finding the Fourth Proportional to 21,215.78, 31,832.67 and 11,352.50

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Solution

The fourth proportional to 21,215.78, 31,832.67 and 11,352.50 is: 17,033.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.78 : 31,832.67 = 11,352.50 : x
  2. Step 2: Convert to fraction form
    21,215.78/31,832.67 = 11,352.50/x
  3. Step 3: Cross multiply
    21,215.78x = 31,832.67 × 11,352.50
  4. Step 4: Simplify right side
    21,215.78x = 361,380,386.18
  5. Step 5: Solve for x
    x = 361,380,386.18/21,215.78
  6. Step 6: Final answer
    x = 17,033.57

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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.