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Finding the Fourth Proportional to 18,858.10, 28,244.06 and 9,004.28

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Solution

The fourth proportional to 18,858.10, 28,244.06 and 9,004.28 is: 13,485.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.10 : 28,244.06 = 9,004.28 : x
  2. Step 2: Convert to fraction form
    18,858.10/28,244.06 = 9,004.28/x
  3. Step 3: Cross multiply
    18,858.10x = 28,244.06 × 9,004.28
  4. Step 4: Simplify right side
    18,858.10x = 254,317,238.34
  5. Step 5: Solve for x
    x = 254,317,238.34/18,858.10
  6. Step 6: Final answer
    x = 13,485.84

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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.