Home / 20,713.08-28,595.82-13,651.80

Finding the Fourth Proportional to 20,713.08, 28,595.82 and 13,651.80

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Solution

The fourth proportional to 20,713.08, 28,595.82 and 13,651.80 is: 18,847.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.08 : 28,595.82 = 13,651.80 : x
  2. Step 2: Convert to fraction form
    20,713.08/28,595.82 = 13,651.80/x
  3. Step 3: Cross multiply
    20,713.08x = 28,595.82 × 13,651.80
  4. Step 4: Simplify right side
    20,713.08x = 390,384,415.48
  5. Step 5: Solve for x
    x = 390,384,415.48/20,713.08
  6. Step 6: Final answer
    x = 18,847.24

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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.