Home / 11,930.81-16,480.02-9,080.87

Finding the Fourth Proportional to 11,930.81, 16,480.02 and 9,080.87

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Solution

The fourth proportional to 11,930.81, 16,480.02 and 9,080.87 is: 12,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,930.81 : 16,480.02 = 9,080.87 : x
  2. Step 2: Convert to fraction form
    11,930.81/16,480.02 = 9,080.87/x
  3. Step 3: Cross multiply
    11,930.81x = 16,480.02 × 9,080.87
  4. Step 4: Simplify right side
    11,930.81x = 149,652,919.22
  5. Step 5: Solve for x
    x = 149,652,919.22/11,930.81
  6. Step 6: Final answer
    x = 12,543.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.