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Finding the Fourth Proportional to 18,445.59, 27,670.21 and 5,299.90

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Solution

The fourth proportional to 18,445.59, 27,670.21 and 5,299.90 is: 7,950.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,445.59 : 27,670.21 = 5,299.90 : x
  2. Step 2: Convert to fraction form
    18,445.59/27,670.21 = 5,299.90/x
  3. Step 3: Cross multiply
    18,445.59x = 27,670.21 × 5,299.90
  4. Step 4: Simplify right side
    18,445.59x = 146,649,263.55
  5. Step 5: Solve for x
    x = 146,649,263.55/18,445.59
  6. Step 6: Final answer
    x = 7,950.37

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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.