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Finding the Fourth Proportional to 30,620.51, 45,941.01 and 11,901.17

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Solution

The fourth proportional to 30,620.51, 45,941.01 and 11,901.17 is: 17,855.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620.51 : 45,941.01 = 11,901.17 : x
  2. Step 2: Convert to fraction form
    30,620.51/45,941.01 = 11,901.17/x
  3. Step 3: Cross multiply
    30,620.51x = 45,941.01 × 11,901.17
  4. Step 4: Simplify right side
    30,620.51x = 546,751,540.28
  5. Step 5: Solve for x
    x = 546,751,540.28/30,620.51
  6. Step 6: Final answer
    x = 17,855.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.