Home / 13,942.28-19,240.74-8,275.64

Finding the Fourth Proportional to 13,942.28, 19,240.74 and 8,275.64

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Solution

The fourth proportional to 13,942.28, 19,240.74 and 8,275.64 is: 11,420.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.28 : 19,240.74 = 8,275.64 : x
  2. Step 2: Convert to fraction form
    13,942.28/19,240.74 = 8,275.64/x
  3. Step 3: Cross multiply
    13,942.28x = 19,240.74 × 8,275.64
  4. Step 4: Simplify right side
    13,942.28x = 159,229,437.57
  5. Step 5: Solve for x
    x = 159,229,437.57/13,942.28
  6. Step 6: Final answer
    x = 11,420.62

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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.