Home / 12,281.36-18,424.44-4,889.28

Finding the Fourth Proportional to 12,281.36, 18,424.44 and 4,889.28

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Solution

The fourth proportional to 12,281.36, 18,424.44 and 4,889.28 is: 7,334.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.36 : 18,424.44 = 4,889.28 : x
  2. Step 2: Convert to fraction form
    12,281.36/18,424.44 = 4,889.28/x
  3. Step 3: Cross multiply
    12,281.36x = 18,424.44 × 4,889.28
  4. Step 4: Simplify right side
    12,281.36x = 90,082,246.00
  5. Step 5: Solve for x
    x = 90,082,246.00/12,281.36
  6. Step 6: Final answer
    x = 7,334.88

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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.