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Finding the Fourth Proportional to 28,447.82, 42,682.80 and 11,803.64

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Solution

The fourth proportional to 28,447.82, 42,682.80 and 11,803.64 is: 17,710.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.82 : 42,682.80 = 11,803.64 : x
  2. Step 2: Convert to fraction form
    28,447.82/42,682.80 = 11,803.64/x
  3. Step 3: Cross multiply
    28,447.82x = 42,682.80 × 11,803.64
  4. Step 4: Simplify right side
    28,447.82x = 503,812,405.39
  5. Step 5: Solve for x
    x = 503,812,405.39/28,447.82
  6. Step 6: Final answer
    x = 17,710.05

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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.