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Finding the Fourth Proportional to 19,999.88, 27,605.15 and 12,441.92

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Solution

The fourth proportional to 19,999.88, 27,605.15 and 12,441.92 is: 17,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.88 : 27,605.15 = 12,441.92 : x
  2. Step 2: Convert to fraction form
    19,999.88/27,605.15 = 12,441.92/x
  3. Step 3: Cross multiply
    19,999.88x = 27,605.15 × 12,441.92
  4. Step 4: Simplify right side
    19,999.88x = 343,461,139.57
  5. Step 5: Solve for x
    x = 343,461,139.57/19,999.88
  6. Step 6: Final answer
    x = 17,173.16

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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.