Home / 21,672.73-29,905.36-12,111.45

Finding the Fourth Proportional to 21,672.73, 29,905.36 and 12,111.45

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Solution

The fourth proportional to 21,672.73, 29,905.36 and 12,111.45 is: 16,712.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.73 : 29,905.36 = 12,111.45 : x
  2. Step 2: Convert to fraction form
    21,672.73/29,905.36 = 12,111.45/x
  3. Step 3: Cross multiply
    21,672.73x = 29,905.36 × 12,111.45
  4. Step 4: Simplify right side
    21,672.73x = 362,197,272.37
  5. Step 5: Solve for x
    x = 362,197,272.37/21,672.73
  6. Step 6: Final answer
    x = 16,712.12

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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.