Home / 18,938.63-26,135.37-11,389.31

Finding the Fourth Proportional to 18,938.63, 26,135.37 and 11,389.31

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Solution

The fourth proportional to 18,938.63, 26,135.37 and 11,389.31 is: 15,717.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.63 : 26,135.37 = 11,389.31 : x
  2. Step 2: Convert to fraction form
    18,938.63/26,135.37 = 11,389.31/x
  3. Step 3: Cross multiply
    18,938.63x = 26,135.37 × 11,389.31
  4. Step 4: Simplify right side
    18,938.63x = 297,663,830.89
  5. Step 5: Solve for x
    x = 297,663,830.89/18,938.63
  6. Step 6: Final answer
    x = 15,717.28

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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.