Home / 21,340.29-29,450.34-11,910.63

Finding the Fourth Proportional to 21,340.29, 29,450.34 and 11,910.63

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Solution

The fourth proportional to 21,340.29, 29,450.34 and 11,910.63 is: 16,437.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.29 : 29,450.34 = 11,910.63 : x
  2. Step 2: Convert to fraction form
    21,340.29/29,450.34 = 11,910.63/x
  3. Step 3: Cross multiply
    21,340.29x = 29,450.34 × 11,910.63
  4. Step 4: Simplify right side
    21,340.29x = 350,772,103.11
  5. Step 5: Solve for x
    x = 350,772,103.11/21,340.29
  6. Step 6: Final answer
    x = 16,437.08

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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.