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Finding the Fourth Proportional to 18,343.50, 27,499.70 and 7,258.01

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Solution

The fourth proportional to 18,343.50, 27,499.70 and 7,258.01 is: 10,880.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.50 : 27,499.70 = 7,258.01 : x
  2. Step 2: Convert to fraction form
    18,343.50/27,499.70 = 7,258.01/x
  3. Step 3: Cross multiply
    18,343.50x = 27,499.70 × 7,258.01
  4. Step 4: Simplify right side
    18,343.50x = 199,592,978.24
  5. Step 5: Solve for x
    x = 199,592,978.24/18,343.50
  6. Step 6: Final answer
    x = 10,880.86

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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.