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Finding the Fourth Proportional to 28,477.84, 42,723.84 and 11,832.88

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Solution

The fourth proportional to 28,477.84, 42,723.84 and 11,832.88 is: 17,752.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,477.84 : 42,723.84 = 11,832.88 : x
  2. Step 2: Convert to fraction form
    28,477.84/42,723.84 = 11,832.88/x
  3. Step 3: Cross multiply
    28,477.84x = 42,723.84 × 11,832.88
  4. Step 4: Simplify right side
    28,477.84x = 505,546,071.86
  5. Step 5: Solve for x
    x = 505,546,071.86/28,477.84
  6. Step 6: Final answer
    x = 17,752.26

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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.