Home / 20,729.53-28,603.16-12,231.01

Finding the Fourth Proportional to 20,729.53, 28,603.16 and 12,231.01

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Solution

The fourth proportional to 20,729.53, 28,603.16 and 12,231.01 is: 16,876.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.53 : 28,603.16 = 12,231.01 : x
  2. Step 2: Convert to fraction form
    20,729.53/28,603.16 = 12,231.01/x
  3. Step 3: Cross multiply
    20,729.53x = 28,603.16 × 12,231.01
  4. Step 4: Simplify right side
    20,729.53x = 349,845,476.01
  5. Step 5: Solve for x
    x = 349,845,476.01/20,729.53
  6. Step 6: Final answer
    x = 16,876.67

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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.