Home / 33,120.08-45,712.20-18,982.40

Finding the Fourth Proportional to 33,120.08, 45,712.20 and 18,982.40

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Solution

The fourth proportional to 33,120.08, 45,712.20 and 18,982.40 is: 26,199.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,120.08 : 45,712.20 = 18,982.40 : x
  2. Step 2: Convert to fraction form
    33,120.08/45,712.20 = 18,982.40/x
  3. Step 3: Cross multiply
    33,120.08x = 45,712.20 × 18,982.40
  4. Step 4: Simplify right side
    33,120.08x = 867,727,265.28
  5. Step 5: Solve for x
    x = 867,727,265.28/33,120.08
  6. Step 6: Final answer
    x = 26,199.43

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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.