Home / 21,056.82-29,057.66-12,671.70

Finding the Fourth Proportional to 21,056.82, 29,057.66 and 12,671.70

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Solution

The fourth proportional to 21,056.82, 29,057.66 and 12,671.70 is: 17,486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.82 : 29,057.66 = 12,671.70 : x
  2. Step 2: Convert to fraction form
    21,056.82/29,057.66 = 12,671.70/x
  3. Step 3: Cross multiply
    21,056.82x = 29,057.66 × 12,671.70
  4. Step 4: Simplify right side
    21,056.82x = 368,209,950.22
  5. Step 5: Solve for x
    x = 368,209,950.22/21,056.82
  6. Step 6: Final answer
    x = 17,486.49

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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.