Home / 12,486.02-18,722.80-4,163.12

Finding the Fourth Proportional to 12,486.02, 18,722.80 and 4,163.12

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Solution

The fourth proportional to 12,486.02, 18,722.80 and 4,163.12 is: 6,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.02 : 18,722.80 = 4,163.12 : x
  2. Step 2: Convert to fraction form
    12,486.02/18,722.80 = 4,163.12/x
  3. Step 3: Cross multiply
    12,486.02x = 18,722.80 × 4,163.12
  4. Step 4: Simplify right side
    12,486.02x = 77,945,263.14
  5. Step 5: Solve for x
    x = 77,945,263.14/12,486.02
  6. Step 6: Final answer
    x = 6,242.60

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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.