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Finding the Fourth Proportional to 12,670.25, 19,005.45 and 3,436.25

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Solution

The fourth proportional to 12,670.25, 19,005.45 and 3,436.25 is: 5,154.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.25 : 19,005.45 = 3,436.25 : x
  2. Step 2: Convert to fraction form
    12,670.25/19,005.45 = 3,436.25/x
  3. Step 3: Cross multiply
    12,670.25x = 19,005.45 × 3,436.25
  4. Step 4: Simplify right side
    12,670.25x = 65,307,460.38
  5. Step 5: Solve for x
    x = 65,307,460.38/12,670.25
  6. Step 6: Final answer
    x = 5,154.39

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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.