Home / 13,746.28-18,972.60-7,777.96

Finding the Fourth Proportional to 13,746.28, 18,972.60 and 7,777.96

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Solution

The fourth proportional to 13,746.28, 18,972.60 and 7,777.96 is: 10,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.28 : 18,972.60 = 7,777.96 : x
  2. Step 2: Convert to fraction form
    13,746.28/18,972.60 = 7,777.96/x
  3. Step 3: Cross multiply
    13,746.28x = 18,972.60 × 7,777.96
  4. Step 4: Simplify right side
    13,746.28x = 147,568,123.90
  5. Step 5: Solve for x
    x = 147,568,123.90/13,746.28
  6. Step 6: Final answer
    x = 10,735.13

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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.