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Finding the Fourth Proportional to 30,610.36, 45,911.88 and 8,425.98

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Solution

The fourth proportional to 30,610.36, 45,911.88 and 8,425.98 is: 12,637.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,610.36 : 45,911.88 = 8,425.98 : x
  2. Step 2: Convert to fraction form
    30,610.36/45,911.88 = 8,425.98/x
  3. Step 3: Cross multiply
    30,610.36x = 45,911.88 × 8,425.98
  4. Step 4: Simplify right side
    30,610.36x = 386,852,582.64
  5. Step 5: Solve for x
    x = 386,852,582.64/30,610.36
  6. Step 6: Final answer
    x = 12,637.96

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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.