Home / 21,947.44-30,288-12,516.16

Finding the Fourth Proportional to 21,947.44, 30,288 and 12,516.16

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Solution

The fourth proportional to 21,947.44, 30,288 and 12,516.16 is: 17,272.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.44 : 30,288 = 12,516.16 : x
  2. Step 2: Convert to fraction form
    21,947.44/30,288 = 12,516.16/x
  3. Step 3: Cross multiply
    21,947.44x = 30,288 × 12,516.16
  4. Step 4: Simplify right side
    21,947.44x = 379,089,454.08
  5. Step 5: Solve for x
    x = 379,089,454.08/21,947.44
  6. Step 6: Final answer
    x = 17,272.60

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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.