Home / 30,650.58-45,981.34-11,940.80

Finding the Fourth Proportional to 30,650.58, 45,981.34 and 11,940.80

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Solution

The fourth proportional to 30,650.58, 45,981.34 and 11,940.80 is: 17,913.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,650.58 : 45,981.34 = 11,940.80 : x
  2. Step 2: Convert to fraction form
    30,650.58/45,981.34 = 11,940.80/x
  3. Step 3: Cross multiply
    30,650.58x = 45,981.34 × 11,940.80
  4. Step 4: Simplify right side
    30,650.58x = 549,053,724.91
  5. Step 5: Solve for x
    x = 549,053,724.91/30,650.58
  6. Step 6: Final answer
    x = 17,913.32

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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.