Home / 20,107.18-27,729.73-12,554.20

Finding the Fourth Proportional to 20,107.18, 27,729.73 and 12,554.20

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Solution

The fourth proportional to 20,107.18, 27,729.73 and 12,554.20 is: 17,313.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.18 : 27,729.73 = 12,554.20 : x
  2. Step 2: Convert to fraction form
    20,107.18/27,729.73 = 12,554.20/x
  3. Step 3: Cross multiply
    20,107.18x = 27,729.73 × 12,554.20
  4. Step 4: Simplify right side
    20,107.18x = 348,124,576.37
  5. Step 5: Solve for x
    x = 348,124,576.37/20,107.18
  6. Step 6: Final answer
    x = 17,313.45

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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.