Home / 20,857.04-28,782.96-11,426

Finding the Fourth Proportional to 20,857.04, 28,782.96 and 11,426

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Solution

The fourth proportional to 20,857.04, 28,782.96 and 11,426 is: 15,768.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857.04 : 28,782.96 = 11,426 : x
  2. Step 2: Convert to fraction form
    20,857.04/28,782.96 = 11,426/x
  3. Step 3: Cross multiply
    20,857.04x = 28,782.96 × 11,426
  4. Step 4: Simplify right side
    20,857.04x = 328,874,100.96
  5. Step 5: Solve for x
    x = 328,874,100.96/20,857.04
  6. Step 6: Final answer
    x = 15,768.01

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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.