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Finding the Fourth Proportional to 14,284.78, 21,429.78 and 4,423.39

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Solution

The fourth proportional to 14,284.78, 21,429.78 and 4,423.39 is: 6,635.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,284.78 : 21,429.78 = 4,423.39 : x
  2. Step 2: Convert to fraction form
    14,284.78/21,429.78 = 4,423.39/x
  3. Step 3: Cross multiply
    14,284.78x = 21,429.78 × 4,423.39
  4. Step 4: Simplify right side
    14,284.78x = 94,792,274.55
  5. Step 5: Solve for x
    x = 94,792,274.55/14,284.78
  6. Step 6: Final answer
    x = 6,635.89

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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.