Home / 12,110.48-18,165.72-8,205.20

Finding the Fourth Proportional to 12,110.48, 18,165.72 and 8,205.20

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Solution

The fourth proportional to 12,110.48, 18,165.72 and 8,205.20 is: 12,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.48 : 18,165.72 = 8,205.20 : x
  2. Step 2: Convert to fraction form
    12,110.48/18,165.72 = 8,205.20/x
  3. Step 3: Cross multiply
    12,110.48x = 18,165.72 × 8,205.20
  4. Step 4: Simplify right side
    12,110.48x = 149,053,365.74
  5. Step 5: Solve for x
    x = 149,053,365.74/12,110.48
  6. Step 6: Final answer
    x = 12,307.80

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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.