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Finding the Fourth Proportional to 12,944.39, 19,436.01 and 7,403.99

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Solution

The fourth proportional to 12,944.39, 19,436.01 and 7,403.99 is: 11,117.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,944.39 : 19,436.01 = 7,403.99 : x
  2. Step 2: Convert to fraction form
    12,944.39/19,436.01 = 7,403.99/x
  3. Step 3: Cross multiply
    12,944.39x = 19,436.01 × 7,403.99
  4. Step 4: Simplify right side
    12,944.39x = 143,903,926.50
  5. Step 5: Solve for x
    x = 143,903,926.50/12,944.39
  6. Step 6: Final answer
    x = 11,117.09

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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.