Home / 33,258.87-45,856.40-20,661.75

Finding the Fourth Proportional to 33,258.87, 45,856.40 and 20,661.75

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Solution

The fourth proportional to 33,258.87, 45,856.40 and 20,661.75 is: 28,487.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,258.87 : 45,856.40 = 20,661.75 : x
  2. Step 2: Convert to fraction form
    33,258.87/45,856.40 = 20,661.75/x
  3. Step 3: Cross multiply
    33,258.87x = 45,856.40 × 20,661.75
  4. Step 4: Simplify right side
    33,258.87x = 947,473,369.39
  5. Step 5: Solve for x
    x = 947,473,369.39/33,258.87
  6. Step 6: Final answer
    x = 28,487.84

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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.