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Finding the Fourth Proportional to 13,122.30, 18,410.10 and 13,122.30

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Solution

The fourth proportional to 13,122.30, 18,410.10 and 13,122.30 is: 18,410.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.30 : 18,410.10 = 13,122.30 : x
  2. Step 2: Convert to fraction form
    13,122.30/18,410.10 = 13,122.30/x
  3. Step 3: Cross multiply
    13,122.30x = 18,410.10 × 13,122.30
  4. Step 4: Simplify right side
    13,122.30x = 241,582,855.23
  5. Step 5: Solve for x
    x = 241,582,855.23/13,122.30
  6. Step 6: Final answer
    x = 18,410.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.