Home / 21,671.30-29,903.37-12,110.78

Finding the Fourth Proportional to 21,671.30, 29,903.37 and 12,110.78

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Solution

The fourth proportional to 21,671.30, 29,903.37 and 12,110.78 is: 16,711.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.30 : 29,903.37 = 12,110.78 : x
  2. Step 2: Convert to fraction form
    21,671.30/29,903.37 = 12,110.78/x
  3. Step 3: Cross multiply
    21,671.30x = 29,903.37 × 12,110.78
  4. Step 4: Simplify right side
    21,671.30x = 362,153,135.33
  5. Step 5: Solve for x
    x = 362,153,135.33/21,671.30
  6. Step 6: Final answer
    x = 16,711.19

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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.