Home / 12,160.69-16,779.90-6,854.49

Finding the Fourth Proportional to 12,160.69, 16,779.90 and 6,854.49

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Solution

The fourth proportional to 12,160.69, 16,779.90 and 6,854.49 is: 9,458.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.69 : 16,779.90 = 6,854.49 : x
  2. Step 2: Convert to fraction form
    12,160.69/16,779.90 = 6,854.49/x
  3. Step 3: Cross multiply
    12,160.69x = 16,779.90 × 6,854.49
  4. Step 4: Simplify right side
    12,160.69x = 115,017,656.75
  5. Step 5: Solve for x
    x = 115,017,656.75/12,160.69
  6. Step 6: Final answer
    x = 9,458.15

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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.