Home / 12,145.88-16,762.38-6,841.20

Finding the Fourth Proportional to 12,145.88, 16,762.38 and 6,841.20

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Solution

The fourth proportional to 12,145.88, 16,762.38 and 6,841.20 is: 9,441.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.88 : 16,762.38 = 6,841.20 : x
  2. Step 2: Convert to fraction form
    12,145.88/16,762.38 = 6,841.20/x
  3. Step 3: Cross multiply
    12,145.88x = 16,762.38 × 6,841.20
  4. Step 4: Simplify right side
    12,145.88x = 114,674,794.06
  5. Step 5: Solve for x
    x = 114,674,794.06/12,145.88
  6. Step 6: Final answer
    x = 9,441.46

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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.