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Finding the Fourth Proportional to 30,655.88, 45,985.44 and 13,108.04

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Solution

The fourth proportional to 30,655.88, 45,985.44 and 13,108.04 is: 19,662.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.88 : 45,985.44 = 13,108.04 : x
  2. Step 2: Convert to fraction form
    30,655.88/45,985.44 = 13,108.04/x
  3. Step 3: Cross multiply
    30,655.88x = 45,985.44 × 13,108.04
  4. Step 4: Simplify right side
    30,655.88x = 602,778,986.94
  5. Step 5: Solve for x
    x = 602,778,986.94/30,655.88
  6. Step 6: Final answer
    x = 19,662.75

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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.