Home / 12,128.24-18,195.02-10,903.52

Finding the Fourth Proportional to 12,128.24, 18,195.02 and 10,903.52

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Solution

The fourth proportional to 12,128.24, 18,195.02 and 10,903.52 is: 16,357.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.24 : 18,195.02 = 10,903.52 : x
  2. Step 2: Convert to fraction form
    12,128.24/18,195.02 = 10,903.52/x
  3. Step 3: Cross multiply
    12,128.24x = 18,195.02 × 10,903.52
  4. Step 4: Simplify right side
    12,128.24x = 198,389,764.47
  5. Step 5: Solve for x
    x = 198,389,764.47/12,128.24
  6. Step 6: Final answer
    x = 16,357.67

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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.