Home / 20,651.67-28,501.58-11,577.90

Finding the Fourth Proportional to 20,651.67, 28,501.58 and 11,577.90

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Solution

The fourth proportional to 20,651.67, 28,501.58 and 11,577.90 is: 15,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.67 : 28,501.58 = 11,577.90 : x
  2. Step 2: Convert to fraction form
    20,651.67/28,501.58 = 11,577.90/x
  3. Step 3: Cross multiply
    20,651.67x = 28,501.58 × 11,577.90
  4. Step 4: Simplify right side
    20,651.67x = 329,988,443.08
  5. Step 5: Solve for x
    x = 329,988,443.08/20,651.67
  6. Step 6: Final answer
    x = 15,978.78

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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.