Home / 20,601.60-28,428.35-11,649.89

Finding the Fourth Proportional to 20,601.60, 28,428.35 and 11,649.89

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Solution

The fourth proportional to 20,601.60, 28,428.35 and 11,649.89 is: 16,075.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.60 : 28,428.35 = 11,649.89 : x
  2. Step 2: Convert to fraction form
    20,601.60/28,428.35 = 11,649.89/x
  3. Step 3: Cross multiply
    20,601.60x = 28,428.35 × 11,649.89
  4. Step 4: Simplify right side
    20,601.60x = 331,186,949.99
  5. Step 5: Solve for x
    x = 331,186,949.99/20,601.60
  6. Step 6: Final answer
    x = 16,075.79

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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.