Home / 18,941.06-26,138.69-10,987.91

Finding the Fourth Proportional to 18,941.06, 26,138.69 and 10,987.91

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Solution

The fourth proportional to 18,941.06, 26,138.69 and 10,987.91 is: 15,163.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.06 : 26,138.69 = 10,987.91 : x
  2. Step 2: Convert to fraction form
    18,941.06/26,138.69 = 10,987.91/x
  3. Step 3: Cross multiply
    18,941.06x = 26,138.69 × 10,987.91
  4. Step 4: Simplify right side
    18,941.06x = 287,209,387.60
  5. Step 5: Solve for x
    x = 287,209,387.60/18,941.06
  6. Step 6: Final answer
    x = 15,163.33

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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.