Home / 21,518.87-29,696.43-11,959.63

Finding the Fourth Proportional to 21,518.87, 29,696.43 and 11,959.63

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Solution

The fourth proportional to 21,518.87, 29,696.43 and 11,959.63 is: 16,504.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.87 : 29,696.43 = 11,959.63 : x
  2. Step 2: Convert to fraction form
    21,518.87/29,696.43 = 11,959.63/x
  3. Step 3: Cross multiply
    21,518.87x = 29,696.43 × 11,959.63
  4. Step 4: Simplify right side
    21,518.87x = 355,158,255.32
  5. Step 5: Solve for x
    x = 355,158,255.32/21,518.87
  6. Step 6: Final answer
    x = 16,504.50

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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.