Home / 20,918.45-28,862.34-11,844.02

Finding the Fourth Proportional to 20,918.45, 28,862.34 and 11,844.02

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Solution

The fourth proportional to 20,918.45, 28,862.34 and 11,844.02 is: 16,341.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918.45 : 28,862.34 = 11,844.02 : x
  2. Step 2: Convert to fraction form
    20,918.45/28,862.34 = 11,844.02/x
  3. Step 3: Cross multiply
    20,918.45x = 28,862.34 × 11,844.02
  4. Step 4: Simplify right side
    20,918.45x = 341,845,987.90
  5. Step 5: Solve for x
    x = 341,845,987.90/20,918.45
  6. Step 6: Final answer
    x = 16,341.85

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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.