Home / 18,885.16-28,288.83-11,075.14

Finding the Fourth Proportional to 18,885.16, 28,288.83 and 11,075.14

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Solution

The fourth proportional to 18,885.16, 28,288.83 and 11,075.14 is: 16,589.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.16 : 28,288.83 = 11,075.14 : x
  2. Step 2: Convert to fraction form
    18,885.16/28,288.83 = 11,075.14/x
  3. Step 3: Cross multiply
    18,885.16x = 28,288.83 × 11,075.14
  4. Step 4: Simplify right side
    18,885.16x = 313,302,752.69
  5. Step 5: Solve for x
    x = 313,302,752.69/18,885.16
  6. Step 6: Final answer
    x = 16,589.89

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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.