Home / 13,490.50-20,235.76-4,256.50

Finding the Fourth Proportional to 13,490.50, 20,235.76 and 4,256.50

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Solution

The fourth proportional to 13,490.50, 20,235.76 and 4,256.50 is: 6,384.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.50 : 20,235.76 = 4,256.50 : x
  2. Step 2: Convert to fraction form
    13,490.50/20,235.76 = 4,256.50/x
  3. Step 3: Cross multiply
    13,490.50x = 20,235.76 × 4,256.50
  4. Step 4: Simplify right side
    13,490.50x = 86,133,512.44
  5. Step 5: Solve for x
    x = 86,133,512.44/13,490.50
  6. Step 6: Final answer
    x = 6,384.75

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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.