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Finding the Fourth Proportional to 21,908.94, 30,223.80 and 14,352

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Solution

The fourth proportional to 21,908.94, 30,223.80 and 14,352 is: 19,798.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.94 : 30,223.80 = 14,352 : x
  2. Step 2: Convert to fraction form
    21,908.94/30,223.80 = 14,352/x
  3. Step 3: Cross multiply
    21,908.94x = 30,223.80 × 14,352
  4. Step 4: Simplify right side
    21,908.94x = 433,771,977.60
  5. Step 5: Solve for x
    x = 433,771,977.60/21,908.94
  6. Step 6: Final answer
    x = 19,798.86

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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.