Home / 19,158.72-28,677.92-13,200.64

Finding the Fourth Proportional to 19,158.72, 28,677.92 and 13,200.64

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Solution

The fourth proportional to 19,158.72, 28,677.92 and 13,200.64 is: 19,759.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,158.72 : 28,677.92 = 13,200.64 : x
  2. Step 2: Convert to fraction form
    19,158.72/28,677.92 = 13,200.64/x
  3. Step 3: Cross multiply
    19,158.72x = 28,677.92 × 13,200.64
  4. Step 4: Simplify right side
    19,158.72x = 378,566,897.87
  5. Step 5: Solve for x
    x = 378,566,897.87/19,158.72
  6. Step 6: Final answer
    x = 19,759.51

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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.