Home / 12,130.56-18,192.33-4,231.98

Finding the Fourth Proportional to 12,130.56, 18,192.33 and 4,231.98

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Solution

The fourth proportional to 12,130.56, 18,192.33 and 4,231.98 is: 6,346.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.56 : 18,192.33 = 4,231.98 : x
  2. Step 2: Convert to fraction form
    12,130.56/18,192.33 = 4,231.98/x
  3. Step 3: Cross multiply
    12,130.56x = 18,192.33 × 4,231.98
  4. Step 4: Simplify right side
    12,130.56x = 76,989,576.71
  5. Step 5: Solve for x
    x = 76,989,576.71/12,130.56
  6. Step 6: Final answer
    x = 6,346.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.