Home / 28,403.50-39,181.92-21,677.41

Finding the Fourth Proportional to 28,403.50, 39,181.92 and 21,677.41

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Solution

The fourth proportional to 28,403.50, 39,181.92 and 21,677.41 is: 29,903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.50 : 39,181.92 = 21,677.41 : x
  2. Step 2: Convert to fraction form
    28,403.50/39,181.92 = 21,677.41/x
  3. Step 3: Cross multiply
    28,403.50x = 39,181.92 × 21,677.41
  4. Step 4: Simplify right side
    28,403.50x = 849,362,544.43
  5. Step 5: Solve for x
    x = 849,362,544.43/28,403.50
  6. Step 6: Final answer
    x = 29,903.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.