Home / 19,905.22-27,457.79-12,440.26

Finding the Fourth Proportional to 19,905.22, 27,457.79 and 12,440.26

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Solution

The fourth proportional to 19,905.22, 27,457.79 and 12,440.26 is: 17,160.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.22 : 27,457.79 = 12,440.26 : x
  2. Step 2: Convert to fraction form
    19,905.22/27,457.79 = 12,440.26/x
  3. Step 3: Cross multiply
    19,905.22x = 27,457.79 × 12,440.26
  4. Step 4: Simplify right side
    19,905.22x = 341,582,046.63
  5. Step 5: Solve for x
    x = 341,582,046.63/19,905.22
  6. Step 6: Final answer
    x = 17,160.43

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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.