Home / 21,631.56-29,851.60-12,677.28

Finding the Fourth Proportional to 21,631.56, 29,851.60 and 12,677.28

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Solution

The fourth proportional to 21,631.56, 29,851.60 and 12,677.28 is: 17,494.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.56 : 29,851.60 = 12,677.28 : x
  2. Step 2: Convert to fraction form
    21,631.56/29,851.60 = 12,677.28/x
  3. Step 3: Cross multiply
    21,631.56x = 29,851.60 × 12,677.28
  4. Step 4: Simplify right side
    21,631.56x = 378,437,091.65
  5. Step 5: Solve for x
    x = 378,437,091.65/21,631.56
  6. Step 6: Final answer
    x = 17,494.67

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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.