Home / 21,521.39-32,263.60-7,479.60

Finding the Fourth Proportional to 21,521.39, 32,263.60 and 7,479.60

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Solution

The fourth proportional to 21,521.39, 32,263.60 and 7,479.60 is: 11,212.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.39 : 32,263.60 = 7,479.60 : x
  2. Step 2: Convert to fraction form
    21,521.39/32,263.60 = 7,479.60/x
  3. Step 3: Cross multiply
    21,521.39x = 32,263.60 × 7,479.60
  4. Step 4: Simplify right side
    21,521.39x = 241,318,765.27
  5. Step 5: Solve for x
    x = 241,318,765.27/21,521.39
  6. Step 6: Final answer
    x = 11,212.97

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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.