Home / 10,918.75-16,364.91-7,751.21

Finding the Fourth Proportional to 10,918.75, 16,364.91 and 7,751.21

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Solution

The fourth proportional to 10,918.75, 16,364.91 and 7,751.21 is: 11,617.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.75 : 16,364.91 = 7,751.21 : x
  2. Step 2: Convert to fraction form
    10,918.75/16,364.91 = 7,751.21/x
  3. Step 3: Cross multiply
    10,918.75x = 16,364.91 × 7,751.21
  4. Step 4: Simplify right side
    10,918.75x = 126,847,802.50
  5. Step 5: Solve for x
    x = 126,847,802.50/10,918.75
  6. Step 6: Final answer
    x = 11,617.43

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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.