Home / 12,289.50-18,434.32-3,055.50

Finding the Fourth Proportional to 12,289.50, 18,434.32 and 3,055.50

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Solution

The fourth proportional to 12,289.50, 18,434.32 and 3,055.50 is: 4,583.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.50 : 18,434.32 = 3,055.50 : x
  2. Step 2: Convert to fraction form
    12,289.50/18,434.32 = 3,055.50/x
  3. Step 3: Cross multiply
    12,289.50x = 18,434.32 × 3,055.50
  4. Step 4: Simplify right side
    12,289.50x = 56,326,064.76
  5. Step 5: Solve for x
    x = 56,326,064.76/12,289.50
  6. Step 6: Final answer
    x = 4,583.27

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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.