Home / 18,918.66-26,107.50-10,420.59

Finding the Fourth Proportional to 18,918.66, 26,107.50 and 10,420.59

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Solution

The fourth proportional to 18,918.66, 26,107.50 and 10,420.59 is: 14,380.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.66 : 26,107.50 = 10,420.59 : x
  2. Step 2: Convert to fraction form
    18,918.66/26,107.50 = 10,420.59/x
  3. Step 3: Cross multiply
    18,918.66x = 26,107.50 × 10,420.59
  4. Step 4: Simplify right side
    18,918.66x = 272,055,553.43
  5. Step 5: Solve for x
    x = 272,055,553.43/18,918.66
  6. Step 6: Final answer
    x = 14,380.28

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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.