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Finding the Fourth Proportional to 12,918.03, 19,365.17 and 5,025.80

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Solution

The fourth proportional to 12,918.03, 19,365.17 and 5,025.80 is: 7,534.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.03 : 19,365.17 = 5,025.80 : x
  2. Step 2: Convert to fraction form
    12,918.03/19,365.17 = 5,025.80/x
  3. Step 3: Cross multiply
    12,918.03x = 19,365.17 × 5,025.80
  4. Step 4: Simplify right side
    12,918.03x = 97,325,349.43
  5. Step 5: Solve for x
    x = 97,325,349.43/12,918.03
  6. Step 6: Final answer
    x = 7,534.07

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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.