Home / 11,985.41-16,539.70-6,680.21

Finding the Fourth Proportional to 11,985.41, 16,539.70 and 6,680.21

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Solution

The fourth proportional to 11,985.41, 16,539.70 and 6,680.21 is: 9,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.41 : 16,539.70 = 6,680.21 : x
  2. Step 2: Convert to fraction form
    11,985.41/16,539.70 = 6,680.21/x
  3. Step 3: Cross multiply
    11,985.41x = 16,539.70 × 6,680.21
  4. Step 4: Simplify right side
    11,985.41x = 110,488,669.34
  5. Step 5: Solve for x
    x = 110,488,669.34/11,985.41
  6. Step 6: Final answer
    x = 9,218.60

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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.