Home / 13,645.28-20,465.36-3,785.28

Finding the Fourth Proportional to 13,645.28, 20,465.36 and 3,785.28

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Solution

The fourth proportional to 13,645.28, 20,465.36 and 3,785.28 is: 5,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.28 : 20,465.36 = 3,785.28 : x
  2. Step 2: Convert to fraction form
    13,645.28/20,465.36 = 3,785.28/x
  3. Step 3: Cross multiply
    13,645.28x = 20,465.36 × 3,785.28
  4. Step 4: Simplify right side
    13,645.28x = 77,467,117.90
  5. Step 5: Solve for x
    x = 77,467,117.90/13,645.28
  6. Step 6: Final answer
    x = 5,677.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.