Home / 21,755.07-30,011.31-14,197.90

Finding the Fourth Proportional to 21,755.07, 30,011.31 and 14,197.90

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Solution

The fourth proportional to 21,755.07, 30,011.31 and 14,197.90 is: 19,586.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,755.07 : 30,011.31 = 14,197.90 : x
  2. Step 2: Convert to fraction form
    21,755.07/30,011.31 = 14,197.90/x
  3. Step 3: Cross multiply
    21,755.07x = 30,011.31 × 14,197.90
  4. Step 4: Simplify right side
    21,755.07x = 426,097,578.25
  5. Step 5: Solve for x
    x = 426,097,578.25/21,755.07
  6. Step 6: Final answer
    x = 19,586.13

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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.