Home / 18,918.63-26,111.16-10,961.64

Finding the Fourth Proportional to 18,918.63, 26,111.16 and 10,961.64

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Solution

The fourth proportional to 18,918.63, 26,111.16 and 10,961.64 is: 15,129.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.63 : 26,111.16 = 10,961.64 : x
  2. Step 2: Convert to fraction form
    18,918.63/26,111.16 = 10,961.64/x
  3. Step 3: Cross multiply
    18,918.63x = 26,111.16 × 10,961.64
  4. Step 4: Simplify right side
    18,918.63x = 286,221,135.90
  5. Step 5: Solve for x
    x = 286,221,135.90/18,918.63
  6. Step 6: Final answer
    x = 15,129.06

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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.