Home / 18,529.20-27,772.20-7,430.40

Finding the Fourth Proportional to 18,529.20, 27,772.20 and 7,430.40

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Solution

The fourth proportional to 18,529.20, 27,772.20 and 7,430.40 is: 11,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,529.20 : 27,772.20 = 7,430.40 : x
  2. Step 2: Convert to fraction form
    18,529.20/27,772.20 = 7,430.40/x
  3. Step 3: Cross multiply
    18,529.20x = 27,772.20 × 7,430.40
  4. Step 4: Simplify right side
    18,529.20x = 206,358,554.88
  5. Step 5: Solve for x
    x = 206,358,554.88/18,529.20
  6. Step 6: Final answer
    x = 11,136.94

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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.