Home / 18,918.64-26,107.48-10,420.60

Finding the Fourth Proportional to 18,918.64, 26,107.48 and 10,420.60

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Solution

The fourth proportional to 18,918.64, 26,107.48 and 10,420.60 is: 14,380.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.64 : 26,107.48 = 10,420.60 : x
  2. Step 2: Convert to fraction form
    18,918.64/26,107.48 = 10,420.60/x
  3. Step 3: Cross multiply
    18,918.64x = 26,107.48 × 10,420.60
  4. Step 4: Simplify right side
    18,918.64x = 272,055,606.09
  5. Step 5: Solve for x
    x = 272,055,606.09/18,918.64
  6. Step 6: Final answer
    x = 14,380.29

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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.