Home / 21,977.19-30,329.93-13,022.80

Finding the Fourth Proportional to 21,977.19, 30,329.93 and 13,022.80

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Solution

The fourth proportional to 21,977.19, 30,329.93 and 13,022.80 is: 17,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.19 : 30,329.93 = 13,022.80 : x
  2. Step 2: Convert to fraction form
    21,977.19/30,329.93 = 13,022.80/x
  3. Step 3: Cross multiply
    21,977.19x = 30,329.93 × 13,022.80
  4. Step 4: Simplify right side
    21,977.19x = 394,980,612.40
  5. Step 5: Solve for x
    x = 394,980,612.40/21,977.19
  6. Step 6: Final answer
    x = 17,972.30

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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.