Home / 18,930.84-28,392.60-6,449.76

Finding the Fourth Proportional to 18,930.84, 28,392.60 and 6,449.76

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Solution

The fourth proportional to 18,930.84, 28,392.60 and 6,449.76 is: 9,673.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.84 : 28,392.60 = 6,449.76 : x
  2. Step 2: Convert to fraction form
    18,930.84/28,392.60 = 6,449.76/x
  3. Step 3: Cross multiply
    18,930.84x = 28,392.60 × 6,449.76
  4. Step 4: Simplify right side
    18,930.84x = 183,125,455.78
  5. Step 5: Solve for x
    x = 183,125,455.78/18,930.84
  6. Step 6: Final answer
    x = 9,673.39

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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.