Home / 15,886.44-21,922.18-9,172.36

Finding the Fourth Proportional to 15,886.44, 21,922.18 and 9,172.36

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Solution

The fourth proportional to 15,886.44, 21,922.18 and 9,172.36 is: 12,657.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,886.44 : 21,922.18 = 9,172.36 : x
  2. Step 2: Convert to fraction form
    15,886.44/21,922.18 = 9,172.36/x
  3. Step 3: Cross multiply
    15,886.44x = 21,922.18 × 9,172.36
  4. Step 4: Simplify right side
    15,886.44x = 201,078,126.94
  5. Step 5: Solve for x
    x = 201,078,126.94/15,886.44
  6. Step 6: Final answer
    x = 12,657.22

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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.