Home / 15,331.53-21,157.25-8,618.50

Finding the Fourth Proportional to 15,331.53, 21,157.25 and 8,618.50

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Solution

The fourth proportional to 15,331.53, 21,157.25 and 8,618.50 is: 11,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.53 : 21,157.25 = 8,618.50 : x
  2. Step 2: Convert to fraction form
    15,331.53/21,157.25 = 8,618.50/x
  3. Step 3: Cross multiply
    15,331.53x = 21,157.25 × 8,618.50
  4. Step 4: Simplify right side
    15,331.53x = 182,343,790.96
  5. Step 5: Solve for x
    x = 182,343,790.96/15,331.53
  6. Step 6: Final answer
    x = 11,893.39

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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.