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Finding the Fourth Proportional to 28,980.96, 39,990.96 and 23,027.04

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Solution

The fourth proportional to 28,980.96, 39,990.96 and 23,027.04 is: 31,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980.96 : 39,990.96 = 23,027.04 : x
  2. Step 2: Convert to fraction form
    28,980.96/39,990.96 = 23,027.04/x
  3. Step 3: Cross multiply
    28,980.96x = 39,990.96 × 23,027.04
  4. Step 4: Simplify right side
    28,980.96x = 920,873,435.56
  5. Step 5: Solve for x
    x = 920,873,435.56/28,980.96
  6. Step 6: Final answer
    x = 31,775.12

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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.