Home / 12,218.48-16,860.67-6,912.95

Finding the Fourth Proportional to 12,218.48, 16,860.67 and 6,912.95

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Solution

The fourth proportional to 12,218.48, 16,860.67 and 6,912.95 is: 9,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.48 : 16,860.67 = 6,912.95 : x
  2. Step 2: Convert to fraction form
    12,218.48/16,860.67 = 6,912.95/x
  3. Step 3: Cross multiply
    12,218.48x = 16,860.67 × 6,912.95
  4. Step 4: Simplify right side
    12,218.48x = 116,556,905.98
  5. Step 5: Solve for x
    x = 116,556,905.98/12,218.48
  6. Step 6: Final answer
    x = 9,539.40

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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.