Home / 15,820.20-21,832.34-8,650.53

Finding the Fourth Proportional to 15,820.20, 21,832.34 and 8,650.53

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Solution

The fourth proportional to 15,820.20, 21,832.34 and 8,650.53 is: 11,937.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.20 : 21,832.34 = 8,650.53 : x
  2. Step 2: Convert to fraction form
    15,820.20/21,832.34 = 8,650.53/x
  3. Step 3: Cross multiply
    15,820.20x = 21,832.34 × 8,650.53
  4. Step 4: Simplify right side
    15,820.20x = 188,861,268.89
  5. Step 5: Solve for x
    x = 188,861,268.89/15,820.20
  6. Step 6: Final answer
    x = 11,937.98

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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.