Home / 19,905.26-27,457.82-12,440.30

Finding the Fourth Proportional to 19,905.26, 27,457.82 and 12,440.30

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Solution

The fourth proportional to 19,905.26, 27,457.82 and 12,440.30 is: 17,160.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.26 : 27,457.82 = 12,440.30 : x
  2. Step 2: Convert to fraction form
    19,905.26/27,457.82 = 12,440.30/x
  3. Step 3: Cross multiply
    19,905.26x = 27,457.82 × 12,440.30
  4. Step 4: Simplify right side
    19,905.26x = 341,583,518.15
  5. Step 5: Solve for x
    x = 341,583,518.15/19,905.26
  6. Step 6: Final answer
    x = 17,160.47

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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.