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Finding the Fourth Proportional to 21,774.94, 30,063.81 and 19,412.98

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Solution

The fourth proportional to 21,774.94, 30,063.81 and 19,412.98 is: 26,802.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,774.94 : 30,063.81 = 19,412.98 : x
  2. Step 2: Convert to fraction form
    21,774.94/30,063.81 = 19,412.98/x
  3. Step 3: Cross multiply
    21,774.94x = 30,063.81 × 19,412.98
  4. Step 4: Simplify right side
    21,774.94x = 583,628,142.25
  5. Step 5: Solve for x
    x = 583,628,142.25/21,774.94
  6. Step 6: Final answer
    x = 26,802.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.