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Finding the Fourth Proportional to 12,398.58, 18,599.06 and 4,078.67

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Solution

The fourth proportional to 12,398.58, 18,599.06 and 4,078.67 is: 6,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.58 : 18,599.06 = 4,078.67 : x
  2. Step 2: Convert to fraction form
    12,398.58/18,599.06 = 4,078.67/x
  3. Step 3: Cross multiply
    12,398.58x = 18,599.06 × 4,078.67
  4. Step 4: Simplify right side
    12,398.58x = 75,859,428.05
  5. Step 5: Solve for x
    x = 75,859,428.05/12,398.58
  6. Step 6: Final answer
    x = 6,118.40

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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.