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Finding the Fourth Proportional to 28,858.16, 43,282.91 and 9,134.16

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Solution

The fourth proportional to 28,858.16, 43,282.91 and 9,134.16 is: 13,699.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,858.16 : 43,282.91 = 9,134.16 : x
  2. Step 2: Convert to fraction form
    28,858.16/43,282.91 = 9,134.16/x
  3. Step 3: Cross multiply
    28,858.16x = 43,282.91 × 9,134.16
  4. Step 4: Simplify right side
    28,858.16x = 395,353,025.21
  5. Step 5: Solve for x
    x = 395,353,025.21/28,858.16
  6. Step 6: Final answer
    x = 13,699.87

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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.