Home / 21,063.90-29,072.79-13,109.34

Finding the Fourth Proportional to 21,063.90, 29,072.79 and 13,109.34

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Solution

The fourth proportional to 21,063.90, 29,072.79 and 13,109.34 is: 18,093.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.90 : 29,072.79 = 13,109.34 : x
  2. Step 2: Convert to fraction form
    21,063.90/29,072.79 = 13,109.34/x
  3. Step 3: Cross multiply
    21,063.90x = 29,072.79 × 13,109.34
  4. Step 4: Simplify right side
    21,063.90x = 381,125,088.86
  5. Step 5: Solve for x
    x = 381,125,088.86/21,063.90
  6. Step 6: Final answer
    x = 18,093.76

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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.