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Finding the Fourth Proportional to 30,647.55, 45,970.41 and 8,462.28

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Solution

The fourth proportional to 30,647.55, 45,970.41 and 8,462.28 is: 12,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,647.55 : 45,970.41 = 8,462.28 : x
  2. Step 2: Convert to fraction form
    30,647.55/45,970.41 = 8,462.28/x
  3. Step 3: Cross multiply
    30,647.55x = 45,970.41 × 8,462.28
  4. Step 4: Simplify right side
    30,647.55x = 389,014,481.13
  5. Step 5: Solve for x
    x = 389,014,481.13/30,647.55
  6. Step 6: Final answer
    x = 12,693.17

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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.