Home / 12,190.95-16,817.36-7,707.20

Finding the Fourth Proportional to 12,190.95, 16,817.36 and 7,707.20

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Solution

The fourth proportional to 12,190.95, 16,817.36 and 7,707.20 is: 10,632.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.95 : 16,817.36 = 7,707.20 : x
  2. Step 2: Convert to fraction form
    12,190.95/16,817.36 = 7,707.20/x
  3. Step 3: Cross multiply
    12,190.95x = 16,817.36 × 7,707.20
  4. Step 4: Simplify right side
    12,190.95x = 129,614,634.37
  5. Step 5: Solve for x
    x = 129,614,634.37/12,190.95
  6. Step 6: Final answer
    x = 10,632.04

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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.