Home / 11,316.50-16,975.21-5,390.34

Finding the Fourth Proportional to 11,316.50, 16,975.21 and 5,390.34

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Solution

The fourth proportional to 11,316.50, 16,975.21 and 5,390.34 is: 8,085.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.50 : 16,975.21 = 5,390.34 : x
  2. Step 2: Convert to fraction form
    11,316.50/16,975.21 = 5,390.34/x
  3. Step 3: Cross multiply
    11,316.50x = 16,975.21 × 5,390.34
  4. Step 4: Simplify right side
    11,316.50x = 91,502,153.47
  5. Step 5: Solve for x
    x = 91,502,153.47/11,316.50
  6. Step 6: Final answer
    x = 8,085.73

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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.