Home / 12,290.67-16,962.62-6,986.79

Finding the Fourth Proportional to 12,290.67, 16,962.62 and 6,986.79

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Solution

The fourth proportional to 12,290.67, 16,962.62 and 6,986.79 is: 9,642.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.67 : 16,962.62 = 6,986.79 : x
  2. Step 2: Convert to fraction form
    12,290.67/16,962.62 = 6,986.79/x
  3. Step 3: Cross multiply
    12,290.67x = 16,962.62 × 6,986.79
  4. Step 4: Simplify right side
    12,290.67x = 118,514,228.86
  5. Step 5: Solve for x
    x = 118,514,228.86/12,290.67
  6. Step 6: Final answer
    x = 9,642.62

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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.