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Finding the Fourth Proportional to 28,774.76, 43,159.03 and 7,716.92

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Solution

The fourth proportional to 28,774.76, 43,159.03 and 7,716.92 is: 11,574.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,774.76 : 43,159.03 = 7,716.92 : x
  2. Step 2: Convert to fraction form
    28,774.76/43,159.03 = 7,716.92/x
  3. Step 3: Cross multiply
    28,774.76x = 43,159.03 × 7,716.92
  4. Step 4: Simplify right side
    28,774.76x = 333,054,673.89
  5. Step 5: Solve for x
    x = 333,054,673.89/28,774.76
  6. Step 6: Final answer
    x = 11,574.54

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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.