Home / 20,210.22-27,886.41-11,257.49

Finding the Fourth Proportional to 20,210.22, 27,886.41 and 11,257.49

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Solution

The fourth proportional to 20,210.22, 27,886.41 and 11,257.49 is: 15,533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.22 : 27,886.41 = 11,257.49 : x
  2. Step 2: Convert to fraction form
    20,210.22/27,886.41 = 11,257.49/x
  3. Step 3: Cross multiply
    20,210.22x = 27,886.41 × 11,257.49
  4. Step 4: Simplify right side
    20,210.22x = 313,931,051.43
  5. Step 5: Solve for x
    x = 313,931,051.43/20,210.22
  6. Step 6: Final answer
    x = 15,533.28

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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.