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Finding the Fourth Proportional to 28,828.40, 43,242.60 and 8,051.90

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Solution

The fourth proportional to 28,828.40, 43,242.60 and 8,051.90 is: 12,077.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828.40 : 43,242.60 = 8,051.90 : x
  2. Step 2: Convert to fraction form
    28,828.40/43,242.60 = 8,051.90/x
  3. Step 3: Cross multiply
    28,828.40x = 43,242.60 × 8,051.90
  4. Step 4: Simplify right side
    28,828.40x = 348,185,090.94
  5. Step 5: Solve for x
    x = 348,185,090.94/28,828.40
  6. Step 6: Final answer
    x = 12,077.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.