Home / 12,189.06-16,821.21-7,475.94

Finding the Fourth Proportional to 12,189.06, 16,821.21 and 7,475.94

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Solution

The fourth proportional to 12,189.06, 16,821.21 and 7,475.94 is: 10,316.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.06 : 16,821.21 = 7,475.94 : x
  2. Step 2: Convert to fraction form
    12,189.06/16,821.21 = 7,475.94/x
  3. Step 3: Cross multiply
    12,189.06x = 16,821.21 × 7,475.94
  4. Step 4: Simplify right side
    12,189.06x = 125,754,356.69
  5. Step 5: Solve for x
    x = 125,754,356.69/12,189.06
  6. Step 6: Final answer
    x = 10,316.99

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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.