Home / 30,726.44-42,408.58-19,956.28

Finding the Fourth Proportional to 30,726.44, 42,408.58 and 19,956.28

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Solution

The fourth proportional to 30,726.44, 42,408.58 and 19,956.28 is: 27,543.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,726.44 : 42,408.58 = 19,956.28 : x
  2. Step 2: Convert to fraction form
    30,726.44/42,408.58 = 19,956.28/x
  3. Step 3: Cross multiply
    30,726.44x = 42,408.58 × 19,956.28
  4. Step 4: Simplify right side
    30,726.44x = 846,317,496.88
  5. Step 5: Solve for x
    x = 846,317,496.88/30,726.44
  6. Step 6: Final answer
    x = 27,543.62

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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.