Home / 21,990.02-33,014.21-21,231.86

Finding the Fourth Proportional to 21,990.02, 33,014.21 and 21,231.86

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Solution

The fourth proportional to 21,990.02, 33,014.21 and 21,231.86 is: 31,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.02 : 33,014.21 = 21,231.86 : x
  2. Step 2: Convert to fraction form
    21,990.02/33,014.21 = 21,231.86/x
  3. Step 3: Cross multiply
    21,990.02x = 33,014.21 × 21,231.86
  4. Step 4: Simplify right side
    21,990.02x = 700,952,813.50
  5. Step 5: Solve for x
    x = 700,952,813.50/21,990.02
  6. Step 6: Final answer
    x = 31,875.96

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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.