Home / 11,120.24-15,343.49-6,643.31

Finding the Fourth Proportional to 11,120.24, 15,343.49 and 6,643.31

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Solution

The fourth proportional to 11,120.24, 15,343.49 and 6,643.31 is: 9,166.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.24 : 15,343.49 = 6,643.31 : x
  2. Step 2: Convert to fraction form
    11,120.24/15,343.49 = 6,643.31/x
  3. Step 3: Cross multiply
    11,120.24x = 15,343.49 × 6,643.31
  4. Step 4: Simplify right side
    11,120.24x = 101,931,560.55
  5. Step 5: Solve for x
    x = 101,931,560.55/11,120.24
  6. Step 6: Final answer
    x = 9,166.31

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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.