Home / 19,877.72-29,871.96-18,561.42

Finding the Fourth Proportional to 19,877.72, 29,871.96 and 18,561.42

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Solution

The fourth proportional to 19,877.72, 29,871.96 and 18,561.42 is: 27,893.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.72 : 29,871.96 = 18,561.42 : x
  2. Step 2: Convert to fraction form
    19,877.72/29,871.96 = 18,561.42/x
  3. Step 3: Cross multiply
    19,877.72x = 29,871.96 × 18,561.42
  4. Step 4: Simplify right side
    19,877.72x = 554,465,995.78
  5. Step 5: Solve for x
    x = 554,465,995.78/19,877.72
  6. Step 6: Final answer
    x = 27,893.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.