Home / 28,561.38-42,859.85-13,771.82

Finding the Fourth Proportional to 28,561.38, 42,859.85 and 13,771.82

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Solution

The fourth proportional to 28,561.38, 42,859.85 and 13,771.82 is: 20,666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.38 : 42,859.85 = 13,771.82 : x
  2. Step 2: Convert to fraction form
    28,561.38/42,859.85 = 13,771.82/x
  3. Step 3: Cross multiply
    28,561.38x = 42,859.85 × 13,771.82
  4. Step 4: Simplify right side
    28,561.38x = 590,257,856.27
  5. Step 5: Solve for x
    x = 590,257,856.27/28,561.38
  6. Step 6: Final answer
    x = 20,666.29

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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.