Home / 30,621.90-45,933.06-8,436.48

Finding the Fourth Proportional to 30,621.90, 45,933.06 and 8,436.48

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Solution

The fourth proportional to 30,621.90, 45,933.06 and 8,436.48 is: 12,654.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,621.90 : 45,933.06 = 8,436.48 : x
  2. Step 2: Convert to fraction form
    30,621.90/45,933.06 = 8,436.48/x
  3. Step 3: Cross multiply
    30,621.90x = 45,933.06 × 8,436.48
  4. Step 4: Simplify right side
    30,621.90x = 387,513,342.03
  5. Step 5: Solve for x
    x = 387,513,342.03/30,621.90
  6. Step 6: Final answer
    x = 12,654.78

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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.