Home / 20,499.89-28,276.85-12,933.01

Finding the Fourth Proportional to 20,499.89, 28,276.85 and 12,933.01

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Solution

The fourth proportional to 20,499.89, 28,276.85 and 12,933.01 is: 17,839.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.89 : 28,276.85 = 12,933.01 : x
  2. Step 2: Convert to fraction form
    20,499.89/28,276.85 = 12,933.01/x
  3. Step 3: Cross multiply
    20,499.89x = 28,276.85 × 12,933.01
  4. Step 4: Simplify right side
    20,499.89x = 365,704,577.77
  5. Step 5: Solve for x
    x = 365,704,577.77/20,499.89
  6. Step 6: Final answer
    x = 17,839.34

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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.