Home / 20,065.12-27,690.84-11,113.60

Finding the Fourth Proportional to 20,065.12, 27,690.84 and 11,113.60

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Solution

The fourth proportional to 20,065.12, 27,690.84 and 11,113.60 is: 15,337.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.12 : 27,690.84 = 11,113.60 : x
  2. Step 2: Convert to fraction form
    20,065.12/27,690.84 = 11,113.60/x
  3. Step 3: Cross multiply
    20,065.12x = 27,690.84 × 11,113.60
  4. Step 4: Simplify right side
    20,065.12x = 307,744,919.42
  5. Step 5: Solve for x
    x = 307,744,919.42/20,065.12
  6. Step 6: Final answer
    x = 15,337.31

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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.