Home / 20,670.08-30,845.44-18,455.04

Finding the Fourth Proportional to 20,670.08, 30,845.44 and 18,455.04

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Solution

The fourth proportional to 20,670.08, 30,845.44 and 18,455.04 is: 27,539.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.08 : 30,845.44 = 18,455.04 : x
  2. Step 2: Convert to fraction form
    20,670.08/30,845.44 = 18,455.04/x
  3. Step 3: Cross multiply
    20,670.08x = 30,845.44 × 18,455.04
  4. Step 4: Simplify right side
    20,670.08x = 569,253,829.02
  5. Step 5: Solve for x
    x = 569,253,829.02/20,670.08
  6. Step 6: Final answer
    x = 27,539.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.