Home / 20,410.22-28,165.69-11,335.10

Finding the Fourth Proportional to 20,410.22, 28,165.69 and 11,335.10

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Solution

The fourth proportional to 20,410.22, 28,165.69 and 11,335.10 is: 15,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.22 : 28,165.69 = 11,335.10 : x
  2. Step 2: Convert to fraction form
    20,410.22/28,165.69 = 11,335.10/x
  3. Step 3: Cross multiply
    20,410.22x = 28,165.69 × 11,335.10
  4. Step 4: Simplify right side
    20,410.22x = 319,260,912.72
  5. Step 5: Solve for x
    x = 319,260,912.72/20,410.22
  6. Step 6: Final answer
    x = 15,642.21

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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.