Home / 12,938.62-19,412.03-4,618.45

Finding the Fourth Proportional to 12,938.62, 19,412.03 and 4,618.45

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Solution

The fourth proportional to 12,938.62, 19,412.03 and 4,618.45 is: 6,929.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.62 : 19,412.03 = 4,618.45 : x
  2. Step 2: Convert to fraction form
    12,938.62/19,412.03 = 4,618.45/x
  3. Step 3: Cross multiply
    12,938.62x = 19,412.03 × 4,618.45
  4. Step 4: Simplify right side
    12,938.62x = 89,653,466.86
  5. Step 5: Solve for x
    x = 89,653,466.86/12,938.62
  6. Step 6: Final answer
    x = 6,929.14

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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.