Home / 21,415.04-29,553.56-11,983.67

Finding the Fourth Proportional to 21,415.04, 29,553.56 and 11,983.67

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Solution

The fourth proportional to 21,415.04, 29,553.56 and 11,983.67 is: 16,537.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.04 : 29,553.56 = 11,983.67 : x
  2. Step 2: Convert to fraction form
    21,415.04/29,553.56 = 11,983.67/x
  3. Step 3: Cross multiply
    21,415.04x = 29,553.56 × 11,983.67
  4. Step 4: Simplify right side
    21,415.04x = 354,159,902.68
  5. Step 5: Solve for x
    x = 354,159,902.68/21,415.04
  6. Step 6: Final answer
    x = 16,537.91

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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.