Home / 13,649.13-20,473.70-3,788.49

Finding the Fourth Proportional to 13,649.13, 20,473.70 and 3,788.49

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Solution

The fourth proportional to 13,649.13, 20,473.70 and 3,788.49 is: 5,682.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.13 : 20,473.70 = 3,788.49 : x
  2. Step 2: Convert to fraction form
    13,649.13/20,473.70 = 3,788.49/x
  3. Step 3: Cross multiply
    13,649.13x = 20,473.70 × 3,788.49
  4. Step 4: Simplify right side
    13,649.13x = 77,564,388.77
  5. Step 5: Solve for x
    x = 77,564,388.77/13,649.13
  6. Step 6: Final answer
    x = 5,682.74

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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.