Home / 11,767.85-16,239.65-6,390.29

Finding the Fourth Proportional to 11,767.85, 16,239.65 and 6,390.29

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Solution

The fourth proportional to 11,767.85, 16,239.65 and 6,390.29 is: 8,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,767.85 : 16,239.65 = 6,390.29 : x
  2. Step 2: Convert to fraction form
    11,767.85/16,239.65 = 6,390.29/x
  3. Step 3: Cross multiply
    11,767.85x = 16,239.65 × 6,390.29
  4. Step 4: Simplify right side
    11,767.85x = 103,775,959.85
  5. Step 5: Solve for x
    x = 103,775,959.85/11,767.85
  6. Step 6: Final answer
    x = 8,818.60

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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.