Home / 11,918.90-16,447.65-6,613.94

Finding the Fourth Proportional to 11,918.90, 16,447.65 and 6,613.94

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Solution

The fourth proportional to 11,918.90, 16,447.65 and 6,613.94 is: 9,127.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.90 : 16,447.65 = 6,613.94 : x
  2. Step 2: Convert to fraction form
    11,918.90/16,447.65 = 6,613.94/x
  3. Step 3: Cross multiply
    11,918.90x = 16,447.65 × 6,613.94
  4. Step 4: Simplify right side
    11,918.90x = 108,783,770.24
  5. Step 5: Solve for x
    x = 108,783,770.24/11,918.90
  6. Step 6: Final answer
    x = 9,127.00

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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.