Home / 12,128.02-18,192.03-4,336.36

Finding the Fourth Proportional to 12,128.02, 18,192.03 and 4,336.36

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Solution

The fourth proportional to 12,128.02, 18,192.03 and 4,336.36 is: 6,504.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.02 : 18,192.03 = 4,336.36 : x
  2. Step 2: Convert to fraction form
    12,128.02/18,192.03 = 4,336.36/x
  3. Step 3: Cross multiply
    12,128.02x = 18,192.03 × 4,336.36
  4. Step 4: Simplify right side
    12,128.02x = 78,887,191.21
  5. Step 5: Solve for x
    x = 78,887,191.21/12,128.02
  6. Step 6: Final answer
    x = 6,504.54

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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.