Home / 21,671.96-29,907.38-12,112.34

Finding the Fourth Proportional to 21,671.96, 29,907.38 and 12,112.34

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Solution

The fourth proportional to 21,671.96, 29,907.38 and 12,112.34 is: 16,715.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.96 : 29,907.38 = 12,112.34 : x
  2. Step 2: Convert to fraction form
    21,671.96/29,907.38 = 12,112.34/x
  3. Step 3: Cross multiply
    21,671.96x = 29,907.38 × 12,112.34
  4. Step 4: Simplify right side
    21,671.96x = 362,248,167.68
  5. Step 5: Solve for x
    x = 362,248,167.68/21,671.96
  6. Step 6: Final answer
    x = 16,715.07

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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.