Home / 21,333.53-31,990.97-11,336.10

Finding the Fourth Proportional to 21,333.53, 31,990.97 and 11,336.10

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Solution

The fourth proportional to 21,333.53, 31,990.97 and 11,336.10 is: 16,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333.53 : 31,990.97 = 11,336.10 : x
  2. Step 2: Convert to fraction form
    21,333.53/31,990.97 = 11,336.10/x
  3. Step 3: Cross multiply
    21,333.53x = 31,990.97 × 11,336.10
  4. Step 4: Simplify right side
    21,333.53x = 362,652,778.34
  5. Step 5: Solve for x
    x = 362,652,778.34/21,333.53
  6. Step 6: Final answer
    x = 16,999.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.