Home / 15,352.53-21,188.37-8,638.44

Finding the Fourth Proportional to 15,352.53, 21,188.37 and 8,638.44

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Solution

The fourth proportional to 15,352.53, 21,188.37 and 8,638.44 is: 11,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,352.53 : 21,188.37 = 8,638.44 : x
  2. Step 2: Convert to fraction form
    15,352.53/21,188.37 = 8,638.44/x
  3. Step 3: Cross multiply
    15,352.53x = 21,188.37 × 8,638.44
  4. Step 4: Simplify right side
    15,352.53x = 183,034,462.94
  5. Step 5: Solve for x
    x = 183,034,462.94/15,352.53
  6. Step 6: Final answer
    x = 11,922.10

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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.