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Finding the Fourth Proportional to 28,894.32, 43,341.08 and 9,172.58

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Solution

The fourth proportional to 28,894.32, 43,341.08 and 9,172.58 is: 13,758.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,894.32 : 43,341.08 = 9,172.58 : x
  2. Step 2: Convert to fraction form
    28,894.32/43,341.08 = 9,172.58/x
  3. Step 3: Cross multiply
    28,894.32x = 43,341.08 × 9,172.58
  4. Step 4: Simplify right side
    28,894.32x = 397,549,261.02
  5. Step 5: Solve for x
    x = 397,549,261.02/28,894.32
  6. Step 6: Final answer
    x = 13,758.73

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