Home / 11,120.47-15,343.67-6,645.67

Finding the Fourth Proportional to 11,120.47, 15,343.67 and 6,645.67

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Solution

The fourth proportional to 11,120.47, 15,343.67 and 6,645.67 is: 9,169.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.47 : 15,343.67 = 6,645.67 : x
  2. Step 2: Convert to fraction form
    11,120.47/15,343.67 = 6,645.67/x
  3. Step 3: Cross multiply
    11,120.47x = 15,343.67 × 6,645.67
  4. Step 4: Simplify right side
    11,120.47x = 101,968,934.18
  5. Step 5: Solve for x
    x = 101,968,934.18/11,120.47
  6. Step 6: Final answer
    x = 9,169.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.