Home / 30,135.24-45,205.38-10,405.80

Finding the Fourth Proportional to 30,135.24, 45,205.38 and 10,405.80

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Solution

The fourth proportional to 30,135.24, 45,205.38 and 10,405.80 is: 15,609.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,135.24 : 45,205.38 = 10,405.80 : x
  2. Step 2: Convert to fraction form
    30,135.24/45,205.38 = 10,405.80/x
  3. Step 3: Cross multiply
    30,135.24x = 45,205.38 × 10,405.80
  4. Step 4: Simplify right side
    30,135.24x = 470,398,143.20
  5. Step 5: Solve for x
    x = 470,398,143.20/30,135.24
  6. Step 6: Final answer
    x = 15,609.57

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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.