Home / 14,219.76-21,319.60-4,855.28

Finding the Fourth Proportional to 14,219.76, 21,319.60 and 4,855.28

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Solution

The fourth proportional to 14,219.76, 21,319.60 and 4,855.28 is: 7,279.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,219.76 : 21,319.60 = 4,855.28 : x
  2. Step 2: Convert to fraction form
    14,219.76/21,319.60 = 4,855.28/x
  3. Step 3: Cross multiply
    14,219.76x = 21,319.60 × 4,855.28
  4. Step 4: Simplify right side
    14,219.76x = 103,512,627.49
  5. Step 5: Solve for x
    x = 103,512,627.49/14,219.76
  6. Step 6: Final answer
    x = 7,279.49

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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.