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Finding the Fourth Proportional to 18,539.64, 27,807.30 and 7,445.88

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Solution

The fourth proportional to 18,539.64, 27,807.30 and 7,445.88 is: 11,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.64 : 27,807.30 = 7,445.88 : x
  2. Step 2: Convert to fraction form
    18,539.64/27,807.30 = 7,445.88/x
  3. Step 3: Cross multiply
    18,539.64x = 27,807.30 × 7,445.88
  4. Step 4: Simplify right side
    18,539.64x = 207,049,818.92
  5. Step 5: Solve for x
    x = 207,049,818.92/18,539.64
  6. Step 6: Final answer
    x = 11,167.95

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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.