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Finding the Fourth Proportional to 30,173.80, 45,186.81 and 21,267.22

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Solution

The fourth proportional to 30,173.80, 45,186.81 and 21,267.22 is: 31,848.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,173.80 : 45,186.81 = 21,267.22 : x
  2. Step 2: Convert to fraction form
    30,173.80/45,186.81 = 21,267.22/x
  3. Step 3: Cross multiply
    30,173.80x = 45,186.81 × 21,267.22
  4. Step 4: Simplify right side
    30,173.80x = 960,997,829.37
  5. Step 5: Solve for x
    x = 960,997,829.37/30,173.80
  6. Step 6: Final answer
    x = 31,848.75

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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.