Home / 12,142.03-18,172.95-8,577.22

Finding the Fourth Proportional to 12,142.03, 18,172.95 and 8,577.22

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Solution

The fourth proportional to 12,142.03, 18,172.95 and 8,577.22 is: 12,837.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.03 : 18,172.95 = 8,577.22 : x
  2. Step 2: Convert to fraction form
    12,142.03/18,172.95 = 8,577.22/x
  3. Step 3: Cross multiply
    12,142.03x = 18,172.95 × 8,577.22
  4. Step 4: Simplify right side
    12,142.03x = 155,873,390.20
  5. Step 5: Solve for x
    x = 155,873,390.20/12,142.03
  6. Step 6: Final answer
    x = 12,837.51

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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.