Home / 20,285.56-27,995.52-11,790.40

Finding the Fourth Proportional to 20,285.56, 27,995.52 and 11,790.40

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Solution

The fourth proportional to 20,285.56, 27,995.52 and 11,790.40 is: 16,271.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.56 : 27,995.52 = 11,790.40 : x
  2. Step 2: Convert to fraction form
    20,285.56/27,995.52 = 11,790.40/x
  3. Step 3: Cross multiply
    20,285.56x = 27,995.52 × 11,790.40
  4. Step 4: Simplify right side
    20,285.56x = 330,078,379.01
  5. Step 5: Solve for x
    x = 330,078,379.01/20,285.56
  6. Step 6: Final answer
    x = 16,271.59

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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.