Home / 14,217.80-21,288.30-11,145.80

Finding the Fourth Proportional to 14,217.80, 21,288.30 and 11,145.80

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Solution

The fourth proportional to 14,217.80, 21,288.30 and 11,145.80 is: 16,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,217.80 : 21,288.30 = 11,145.80 : x
  2. Step 2: Convert to fraction form
    14,217.80/21,288.30 = 11,145.80/x
  3. Step 3: Cross multiply
    14,217.80x = 21,288.30 × 11,145.80
  4. Step 4: Simplify right side
    14,217.80x = 237,275,134.14
  5. Step 5: Solve for x
    x = 237,275,134.14/14,217.80
  6. Step 6: Final answer
    x = 16,688.60

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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.