Home / 21,515.58-32,245.47-9,660.60

Finding the Fourth Proportional to 21,515.58, 32,245.47 and 9,660.60

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Solution

The fourth proportional to 21,515.58, 32,245.47 and 9,660.60 is: 14,478.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.58 : 32,245.47 = 9,660.60 : x
  2. Step 2: Convert to fraction form
    21,515.58/32,245.47 = 9,660.60/x
  3. Step 3: Cross multiply
    21,515.58x = 32,245.47 × 9,660.60
  4. Step 4: Simplify right side
    21,515.58x = 311,510,587.48
  5. Step 5: Solve for x
    x = 311,510,587.48/21,515.58
  6. Step 6: Final answer
    x = 14,478.37

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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.