Home / 30,132.54-45,187.20-10,405.80

Finding the Fourth Proportional to 30,132.54, 45,187.20 and 10,405.80

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Solution

The fourth proportional to 30,132.54, 45,187.20 and 10,405.80 is: 15,604.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,132.54 : 45,187.20 = 10,405.80 : x
  2. Step 2: Convert to fraction form
    30,132.54/45,187.20 = 10,405.80/x
  3. Step 3: Cross multiply
    30,132.54x = 45,187.20 × 10,405.80
  4. Step 4: Simplify right side
    30,132.54x = 470,208,965.76
  5. Step 5: Solve for x
    x = 470,208,965.76/30,132.54
  6. Step 6: Final answer
    x = 15,604.69

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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.