Home / 21,441.36-32,211.48-20,555.64

Finding the Fourth Proportional to 21,441.36, 32,211.48 and 20,555.64

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Solution

The fourth proportional to 21,441.36, 32,211.48 and 20,555.64 is: 30,880.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,441.36 : 32,211.48 = 20,555.64 : x
  2. Step 2: Convert to fraction form
    21,441.36/32,211.48 = 20,555.64/x
  3. Step 3: Cross multiply
    21,441.36x = 32,211.48 × 20,555.64
  4. Step 4: Simplify right side
    21,441.36x = 662,127,586.75
  5. Step 5: Solve for x
    x = 662,127,586.75/21,441.36
  6. Step 6: Final answer
    x = 30,880.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.