Home / 21,969.09-30,327.21-14,021.91

Finding the Fourth Proportional to 21,969.09, 30,327.21 and 14,021.91

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Solution

The fourth proportional to 21,969.09, 30,327.21 and 14,021.91 is: 19,356.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.09 : 30,327.21 = 14,021.91 : x
  2. Step 2: Convert to fraction form
    21,969.09/30,327.21 = 14,021.91/x
  3. Step 3: Cross multiply
    21,969.09x = 30,327.21 × 14,021.91
  4. Step 4: Simplify right side
    21,969.09x = 425,245,409.17
  5. Step 5: Solve for x
    x = 425,245,409.17/21,969.09
  6. Step 6: Final answer
    x = 19,356.53

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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.