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Finding the Fourth Proportional to 18,796.02, 28,172.06 and 9,430.98

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Solution

The fourth proportional to 18,796.02, 28,172.06 and 9,430.98 is: 14,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.02 : 28,172.06 = 9,430.98 : x
  2. Step 2: Convert to fraction form
    18,796.02/28,172.06 = 9,430.98/x
  3. Step 3: Cross multiply
    18,796.02x = 28,172.06 × 9,430.98
  4. Step 4: Simplify right side
    18,796.02x = 265,690,134.42
  5. Step 5: Solve for x
    x = 265,690,134.42/18,796.02
  6. Step 6: Final answer
    x = 14,135.45

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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.