Home / 30,328.05-45,485.81-8,136.17

Finding the Fourth Proportional to 30,328.05, 45,485.81 and 8,136.17

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Solution

The fourth proportional to 30,328.05, 45,485.81 and 8,136.17 is: 12,202.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,328.05 : 45,485.81 = 8,136.17 : x
  2. Step 2: Convert to fraction form
    30,328.05/45,485.81 = 8,136.17/x
  3. Step 3: Cross multiply
    30,328.05x = 45,485.81 × 8,136.17
  4. Step 4: Simplify right side
    30,328.05x = 370,080,282.75
  5. Step 5: Solve for x
    x = 370,080,282.75/30,328.05
  6. Step 6: Final answer
    x = 12,202.57

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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.