Home / 12,281.22-16,942.50-7,245.45

Finding the Fourth Proportional to 12,281.22, 16,942.50 and 7,245.45

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Solution

The fourth proportional to 12,281.22, 16,942.50 and 7,245.45 is: 9,995.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.22 : 16,942.50 = 7,245.45 : x
  2. Step 2: Convert to fraction form
    12,281.22/16,942.50 = 7,245.45/x
  3. Step 3: Cross multiply
    12,281.22x = 16,942.50 × 7,245.45
  4. Step 4: Simplify right side
    12,281.22x = 122,756,036.63
  5. Step 5: Solve for x
    x = 122,756,036.63/12,281.22
  6. Step 6: Final answer
    x = 9,995.43

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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.