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Finding the Fourth Proportional to 18,976.71, 26,188.74 and 10,480.05

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Solution

The fourth proportional to 18,976.71, 26,188.74 and 10,480.05 is: 14,462.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,976.71 : 26,188.74 = 10,480.05 : x
  2. Step 2: Convert to fraction form
    18,976.71/26,188.74 = 10,480.05/x
  3. Step 3: Cross multiply
    18,976.71x = 26,188.74 × 10,480.05
  4. Step 4: Simplify right side
    18,976.71x = 274,459,304.64
  5. Step 5: Solve for x
    x = 274,459,304.64/18,976.71
  6. Step 6: Final answer
    x = 14,462.96

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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.