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Finding the Fourth Proportional to 30,467.69, 45,686.99 and 17,821.01

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Solution

The fourth proportional to 30,467.69, 45,686.99 and 17,821.01 is: 26,723.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,467.69 : 45,686.99 = 17,821.01 : x
  2. Step 2: Convert to fraction form
    30,467.69/45,686.99 = 17,821.01/x
  3. Step 3: Cross multiply
    30,467.69x = 45,686.99 × 17,821.01
  4. Step 4: Simplify right side
    30,467.69x = 814,187,988.12
  5. Step 5: Solve for x
    x = 814,187,988.12/30,467.69
  6. Step 6: Final answer
    x = 26,723.00

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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.