Home / 31,728.40-43,783.40-17,581.20

Finding the Fourth Proportional to 31,728.40, 43,783.40 and 17,581.20

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Solution

The fourth proportional to 31,728.40, 43,783.40 and 17,581.20 is: 24,261.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.40 : 43,783.40 = 17,581.20 : x
  2. Step 2: Convert to fraction form
    31,728.40/43,783.40 = 17,581.20/x
  3. Step 3: Cross multiply
    31,728.40x = 43,783.40 × 17,581.20
  4. Step 4: Simplify right side
    31,728.40x = 769,764,712.08
  5. Step 5: Solve for x
    x = 769,764,712.08/31,728.40
  6. Step 6: Final answer
    x = 24,261.06

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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.