Home / 12,558.08-18,838.88-4,240.50

Finding the Fourth Proportional to 12,558.08, 18,838.88 and 4,240.50

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Solution

The fourth proportional to 12,558.08, 18,838.88 and 4,240.50 is: 6,361.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.08 : 18,838.88 = 4,240.50 : x
  2. Step 2: Convert to fraction form
    12,558.08/18,838.88 = 4,240.50/x
  3. Step 3: Cross multiply
    12,558.08x = 18,838.88 × 4,240.50
  4. Step 4: Simplify right side
    12,558.08x = 79,886,270.64
  5. Step 5: Solve for x
    x = 79,886,270.64/12,558.08
  6. Step 6: Final answer
    x = 6,361.34

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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.