Home / 20,026.80-27,639.36-11,643.28

Finding the Fourth Proportional to 20,026.80, 27,639.36 and 11,643.28

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Solution

The fourth proportional to 20,026.80, 27,639.36 and 11,643.28 is: 16,069.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,026.80 : 27,639.36 = 11,643.28 : x
  2. Step 2: Convert to fraction form
    20,026.80/27,639.36 = 11,643.28/x
  3. Step 3: Cross multiply
    20,026.80x = 27,639.36 × 11,643.28
  4. Step 4: Simplify right side
    20,026.80x = 321,812,807.50
  5. Step 5: Solve for x
    x = 321,812,807.50/20,026.80
  6. Step 6: Final answer
    x = 16,069.11

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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.