Home / 15,815.09-21,824.60-8,741.36

Finding the Fourth Proportional to 15,815.09, 21,824.60 and 8,741.36

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Solution

The fourth proportional to 15,815.09, 21,824.60 and 8,741.36 is: 12,062.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.09 : 21,824.60 = 8,741.36 : x
  2. Step 2: Convert to fraction form
    15,815.09/21,824.60 = 8,741.36/x
  3. Step 3: Cross multiply
    15,815.09x = 21,824.60 × 8,741.36
  4. Step 4: Simplify right side
    15,815.09x = 190,776,696.31
  5. Step 5: Solve for x
    x = 190,776,696.31/15,815.09
  6. Step 6: Final answer
    x = 12,062.95

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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.