Home / 12,147.21-16,762.80-6,841.90

Finding the Fourth Proportional to 12,147.21, 16,762.80 and 6,841.90

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Solution

The fourth proportional to 12,147.21, 16,762.80 and 6,841.90 is: 9,441.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.21 : 16,762.80 = 6,841.90 : x
  2. Step 2: Convert to fraction form
    12,147.21/16,762.80 = 6,841.90/x
  3. Step 3: Cross multiply
    12,147.21x = 16,762.80 × 6,841.90
  4. Step 4: Simplify right side
    12,147.21x = 114,689,401.32
  5. Step 5: Solve for x
    x = 114,689,401.32/12,147.21
  6. Step 6: Final answer
    x = 9,441.62

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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.