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Finding the Fourth Proportional to 18,842.64, 28,264.56 and 9,477.54

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Solution

The fourth proportional to 18,842.64, 28,264.56 and 9,477.54 is: 14,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.64 : 28,264.56 = 9,477.54 : x
  2. Step 2: Convert to fraction form
    18,842.64/28,264.56 = 9,477.54/x
  3. Step 3: Cross multiply
    18,842.64x = 28,264.56 × 9,477.54
  4. Step 4: Simplify right side
    18,842.64x = 267,878,497.98
  5. Step 5: Solve for x
    x = 267,878,497.98/18,842.64
  6. Step 6: Final answer
    x = 14,216.61

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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.