Home / 21,949.41-30,289.96-11,877.63

Finding the Fourth Proportional to 21,949.41, 30,289.96 and 11,877.63

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Solution

The fourth proportional to 21,949.41, 30,289.96 and 11,877.63 is: 16,391.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.41 : 30,289.96 = 11,877.63 : x
  2. Step 2: Convert to fraction form
    21,949.41/30,289.96 = 11,877.63/x
  3. Step 3: Cross multiply
    21,949.41x = 30,289.96 × 11,877.63
  4. Step 4: Simplify right side
    21,949.41x = 359,772,878.21
  5. Step 5: Solve for x
    x = 359,772,878.21/21,949.41
  6. Step 6: Final answer
    x = 16,391.00

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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.