Home / 11,330.69-16,989.35-3,430.80

Finding the Fourth Proportional to 11,330.69, 16,989.35 and 3,430.80

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Solution

The fourth proportional to 11,330.69, 16,989.35 and 3,430.80 is: 5,144.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,330.69 : 16,989.35 = 3,430.80 : x
  2. Step 2: Convert to fraction form
    11,330.69/16,989.35 = 3,430.80/x
  3. Step 3: Cross multiply
    11,330.69x = 16,989.35 × 3,430.80
  4. Step 4: Simplify right side
    11,330.69x = 58,287,044.83
  5. Step 5: Solve for x
    x = 58,287,044.83/11,330.69
  6. Step 6: Final answer
    x = 5,144.18

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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.