Home / 13,735.20-18,953.12-7,766.72

Finding the Fourth Proportional to 13,735.20, 18,953.12 and 7,766.72

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Solution

The fourth proportional to 13,735.20, 18,953.12 and 7,766.72 is: 10,717.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,735.20 : 18,953.12 = 7,766.72 : x
  2. Step 2: Convert to fraction form
    13,735.20/18,953.12 = 7,766.72/x
  3. Step 3: Cross multiply
    13,735.20x = 18,953.12 × 7,766.72
  4. Step 4: Simplify right side
    13,735.20x = 147,203,576.17
  5. Step 5: Solve for x
    x = 147,203,576.17/13,735.20
  6. Step 6: Final answer
    x = 10,717.25

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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.