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Finding the Fourth Proportional to 14,218.50, 21,335.43 and 6,922.50

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Solution

The fourth proportional to 14,218.50, 21,335.43 and 6,922.50 is: 10,387.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.50 : 21,335.43 = 6,922.50 : x
  2. Step 2: Convert to fraction form
    14,218.50/21,335.43 = 6,922.50/x
  3. Step 3: Cross multiply
    14,218.50x = 21,335.43 × 6,922.50
  4. Step 4: Simplify right side
    14,218.50x = 147,694,514.18
  5. Step 5: Solve for x
    x = 147,694,514.18/14,218.50
  6. Step 6: Final answer
    x = 10,387.49

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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.