Home / 12,078.18-16,779.49-11,970.05

Finding the Fourth Proportional to 12,078.18, 16,779.49 and 11,970.05

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Solution

The fourth proportional to 12,078.18, 16,779.49 and 11,970.05 is: 16,629.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.18 : 16,779.49 = 11,970.05 : x
  2. Step 2: Convert to fraction form
    12,078.18/16,779.49 = 11,970.05/x
  3. Step 3: Cross multiply
    12,078.18x = 16,779.49 × 11,970.05
  4. Step 4: Simplify right side
    12,078.18x = 200,851,220.45
  5. Step 5: Solve for x
    x = 200,851,220.45/12,078.18
  6. Step 6: Final answer
    x = 16,629.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.