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Finding the Fourth Proportional to 18,878.64, 26,042.22 and 11,802.48

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Solution

The fourth proportional to 18,878.64, 26,042.22 and 11,802.48 is: 16,280.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.64 : 26,042.22 = 11,802.48 : x
  2. Step 2: Convert to fraction form
    18,878.64/26,042.22 = 11,802.48/x
  3. Step 3: Cross multiply
    18,878.64x = 26,042.22 × 11,802.48
  4. Step 4: Simplify right side
    18,878.64x = 307,362,780.71
  5. Step 5: Solve for x
    x = 307,362,780.71/18,878.64
  6. Step 6: Final answer
    x = 16,280.98

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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.