Home / 30,315.45-45,452.04-13,439.32

Finding the Fourth Proportional to 30,315.45, 45,452.04 and 13,439.32

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Solution

The fourth proportional to 30,315.45, 45,452.04 and 13,439.32 is: 20,149.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,315.45 : 45,452.04 = 13,439.32 : x
  2. Step 2: Convert to fraction form
    30,315.45/45,452.04 = 13,439.32/x
  3. Step 3: Cross multiply
    30,315.45x = 45,452.04 × 13,439.32
  4. Step 4: Simplify right side
    30,315.45x = 610,844,510.21
  5. Step 5: Solve for x
    x = 610,844,510.21/30,315.45
  6. Step 6: Final answer
    x = 20,149.61

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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.