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Finding the Fourth Proportional to 28,774.64, 43,158.86 and 7,716.77

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Solution

The fourth proportional to 28,774.64, 43,158.86 and 7,716.77 is: 11,574.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,774.64 : 43,158.86 = 7,716.77 : x
  2. Step 2: Convert to fraction form
    28,774.64/43,158.86 = 7,716.77/x
  3. Step 3: Cross multiply
    28,774.64x = 43,158.86 × 7,716.77
  4. Step 4: Simplify right side
    28,774.64x = 333,046,957.50
  5. Step 5: Solve for x
    x = 333,046,957.50/28,774.64
  6. Step 6: Final answer
    x = 11,574.32

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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.