Home / 19,683.12-27,199.80-15,524.40

Finding the Fourth Proportional to 19,683.12, 27,199.80 and 15,524.40

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Solution

The fourth proportional to 19,683.12, 27,199.80 and 15,524.40 is: 21,452.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,683.12 : 27,199.80 = 15,524.40 : x
  2. Step 2: Convert to fraction form
    19,683.12/27,199.80 = 15,524.40/x
  3. Step 3: Cross multiply
    19,683.12x = 27,199.80 × 15,524.40
  4. Step 4: Simplify right side
    19,683.12x = 422,260,575.12
  5. Step 5: Solve for x
    x = 422,260,575.12/19,683.12
  6. Step 6: Final answer
    x = 21,452.93

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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.