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Finding the Fourth Proportional to 30,419.51, 45,518.24 and 17,945.51

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Solution

The fourth proportional to 30,419.51, 45,518.24 and 17,945.51 is: 26,852.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,419.51 : 45,518.24 = 17,945.51 : x
  2. Step 2: Convert to fraction form
    30,419.51/45,518.24 = 17,945.51/x
  3. Step 3: Cross multiply
    30,419.51x = 45,518.24 × 17,945.51
  4. Step 4: Simplify right side
    30,419.51x = 816,847,848.37
  5. Step 5: Solve for x
    x = 816,847,848.37/30,419.51
  6. Step 6: Final answer
    x = 26,852.77

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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.