Home / 21,331.76-29,437.74-11,900.33

Finding the Fourth Proportional to 21,331.76, 29,437.74 and 11,900.33

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Solution

The fourth proportional to 21,331.76, 29,437.74 and 11,900.33 is: 16,422.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.76 : 29,437.74 = 11,900.33 : x
  2. Step 2: Convert to fraction form
    21,331.76/29,437.74 = 11,900.33/x
  3. Step 3: Cross multiply
    21,331.76x = 29,437.74 × 11,900.33
  4. Step 4: Simplify right side
    21,331.76x = 350,318,820.45
  5. Step 5: Solve for x
    x = 350,318,820.45/21,331.76
  6. Step 6: Final answer
    x = 16,422.41

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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.