Home / 21,063.40-29,072.10-13,108.84

Finding the Fourth Proportional to 21,063.40, 29,072.10 and 13,108.84

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Solution

The fourth proportional to 21,063.40, 29,072.10 and 13,108.84 is: 18,093.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.40 : 29,072.10 = 13,108.84 : x
  2. Step 2: Convert to fraction form
    21,063.40/29,072.10 = 13,108.84/x
  3. Step 3: Cross multiply
    21,063.40x = 29,072.10 × 13,108.84
  4. Step 4: Simplify right side
    21,063.40x = 381,101,507.36
  5. Step 5: Solve for x
    x = 381,101,507.36/21,063.40
  6. Step 6: Final answer
    x = 18,093.07

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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.