Home / 30,154.46-45,231.81-12,611.99

Finding the Fourth Proportional to 30,154.46, 45,231.81 and 12,611.99

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Solution

The fourth proportional to 30,154.46, 45,231.81 and 12,611.99 is: 18,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.46 : 45,231.81 = 12,611.99 : x
  2. Step 2: Convert to fraction form
    30,154.46/45,231.81 = 12,611.99/x
  3. Step 3: Cross multiply
    30,154.46x = 45,231.81 × 12,611.99
  4. Step 4: Simplify right side
    30,154.46x = 570,462,909.24
  5. Step 5: Solve for x
    x = 570,462,909.24/30,154.46
  6. Step 6: Final answer
    x = 18,918.03

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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.