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Finding the Fourth Proportional to 18,988, 26,203.52 and 10,606.56

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Solution

The fourth proportional to 18,988, 26,203.52 and 10,606.56 is: 14,637.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988 : 26,203.52 = 10,606.56 : x
  2. Step 2: Convert to fraction form
    18,988/26,203.52 = 10,606.56/x
  3. Step 3: Cross multiply
    18,988x = 26,203.52 × 10,606.56
  4. Step 4: Simplify right side
    18,988x = 277,929,207.09
  5. Step 5: Solve for x
    x = 277,929,207.09/18,988
  6. Step 6: Final answer
    x = 14,637.10

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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.