Home / 12,130.16-18,195.05-6,618.60

Finding the Fourth Proportional to 12,130.16, 18,195.05 and 6,618.60

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Solution

The fourth proportional to 12,130.16, 18,195.05 and 6,618.60 is: 9,927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.16 : 18,195.05 = 6,618.60 : x
  2. Step 2: Convert to fraction form
    12,130.16/18,195.05 = 6,618.60/x
  3. Step 3: Cross multiply
    12,130.16x = 18,195.05 × 6,618.60
  4. Step 4: Simplify right side
    12,130.16x = 120,425,724.84
  5. Step 5: Solve for x
    x = 120,425,724.84/12,130.16
  6. Step 6: Final answer
    x = 9,927.80

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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.