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Finding the Fourth Proportional to 19,603.40, 27,066.80 and 12,059.88

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Solution

The fourth proportional to 19,603.40, 27,066.80 and 12,059.88 is: 16,651.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.40 : 27,066.80 = 12,059.88 : x
  2. Step 2: Convert to fraction form
    19,603.40/27,066.80 = 12,059.88/x
  3. Step 3: Cross multiply
    19,603.40x = 27,066.80 × 12,059.88
  4. Step 4: Simplify right side
    19,603.40x = 326,422,359.98
  5. Step 5: Solve for x
    x = 326,422,359.98/19,603.40
  6. Step 6: Final answer
    x = 16,651.31

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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.