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Finding the Fourth Proportional to 28,904.17, 43,351.72 and 9,180.13

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Solution

The fourth proportional to 28,904.17, 43,351.72 and 9,180.13 is: 13,768.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.17 : 43,351.72 = 9,180.13 : x
  2. Step 2: Convert to fraction form
    28,904.17/43,351.72 = 9,180.13/x
  3. Step 3: Cross multiply
    28,904.17x = 43,351.72 × 9,180.13
  4. Step 4: Simplify right side
    28,904.17x = 397,974,425.32
  5. Step 5: Solve for x
    x = 397,974,425.32/28,904.17
  6. Step 6: Final answer
    x = 13,768.75

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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.