Home / 28,260.72-39,006.96-19,311.84

Finding the Fourth Proportional to 28,260.72, 39,006.96 and 19,311.84

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Solution

The fourth proportional to 28,260.72, 39,006.96 and 19,311.84 is: 26,655.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.72 : 39,006.96 = 19,311.84 : x
  2. Step 2: Convert to fraction form
    28,260.72/39,006.96 = 19,311.84/x
  3. Step 3: Cross multiply
    28,260.72x = 39,006.96 × 19,311.84
  4. Step 4: Simplify right side
    28,260.72x = 753,296,170.41
  5. Step 5: Solve for x
    x = 753,296,170.41/28,260.72
  6. Step 6: Final answer
    x = 26,655.24

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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.