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Finding the Fourth Proportional to 28,859.16, 43,284.41 and 9,135.16

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Solution

The fourth proportional to 28,859.16, 43,284.41 and 9,135.16 is: 13,701.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,859.16 : 43,284.41 = 9,135.16 : x
  2. Step 2: Convert to fraction form
    28,859.16/43,284.41 = 9,135.16/x
  3. Step 3: Cross multiply
    28,859.16x = 43,284.41 × 9,135.16
  4. Step 4: Simplify right side
    28,859.16x = 395,410,010.86
  5. Step 5: Solve for x
    x = 395,410,010.86/28,859.16
  6. Step 6: Final answer
    x = 13,701.37

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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.