Home / 30,969.20-46,439.60-9,905.14

Finding the Fourth Proportional to 30,969.20, 46,439.60 and 9,905.14

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Solution

The fourth proportional to 30,969.20, 46,439.60 and 9,905.14 is: 14,853.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,969.20 : 46,439.60 = 9,905.14 : x
  2. Step 2: Convert to fraction form
    30,969.20/46,439.60 = 9,905.14/x
  3. Step 3: Cross multiply
    30,969.20x = 46,439.60 × 9,905.14
  4. Step 4: Simplify right side
    30,969.20x = 459,990,739.54
  5. Step 5: Solve for x
    x = 459,990,739.54/30,969.20
  6. Step 6: Final answer
    x = 14,853.17

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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.