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Finding the Fourth Proportional to 31,976.40, 44,118.76 and 18,178.54

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Solution

The fourth proportional to 31,976.40, 44,118.76 and 18,178.54 is: 25,081.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,976.40 : 44,118.76 = 18,178.54 : x
  2. Step 2: Convert to fraction form
    31,976.40/44,118.76 = 18,178.54/x
  3. Step 3: Cross multiply
    31,976.40x = 44,118.76 × 18,178.54
  4. Step 4: Simplify right side
    31,976.40x = 802,014,643.41
  5. Step 5: Solve for x
    x = 802,014,643.41/31,976.40
  6. Step 6: Final answer
    x = 25,081.46

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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.