Home / 14,222.72-21,319.50-5,455.28

Finding the Fourth Proportional to 14,222.72, 21,319.50 and 5,455.28

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Solution

The fourth proportional to 14,222.72, 21,319.50 and 5,455.28 is: 8,177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,222.72 : 21,319.50 = 5,455.28 : x
  2. Step 2: Convert to fraction form
    14,222.72/21,319.50 = 5,455.28/x
  3. Step 3: Cross multiply
    14,222.72x = 21,319.50 × 5,455.28
  4. Step 4: Simplify right side
    14,222.72x = 116,303,841.96
  5. Step 5: Solve for x
    x = 116,303,841.96/14,222.72
  6. Step 6: Final answer
    x = 8,177.33

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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.