Home / 21,478.60-32,198.45-7,624.36

Finding the Fourth Proportional to 21,478.60, 32,198.45 and 7,624.36

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Solution

The fourth proportional to 21,478.60, 32,198.45 and 7,624.36 is: 11,429.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.60 : 32,198.45 = 7,624.36 : x
  2. Step 2: Convert to fraction form
    21,478.60/32,198.45 = 7,624.36/x
  3. Step 3: Cross multiply
    21,478.60x = 32,198.45 × 7,624.36
  4. Step 4: Simplify right side
    21,478.60x = 245,492,413.25
  5. Step 5: Solve for x
    x = 245,492,413.25/21,478.60
  6. Step 6: Final answer
    x = 11,429.63

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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.