Home / 21,331.17-29,435.00-11,900.34

Finding the Fourth Proportional to 21,331.17, 29,435.00 and 11,900.34

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Solution

The fourth proportional to 21,331.17, 29,435.00 and 11,900.34 is: 16,421.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.17 : 29,435.00 = 11,900.34 : x
  2. Step 2: Convert to fraction form
    21,331.17/29,435.00 = 11,900.34/x
  3. Step 3: Cross multiply
    21,331.17x = 29,435.00 × 11,900.34
  4. Step 4: Simplify right side
    21,331.17x = 350,286,448.40
  5. Step 5: Solve for x
    x = 350,286,448.40/21,331.17
  6. Step 6: Final answer
    x = 16,421.34

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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.