Home / 28,685.70-43,031.21-11,156.85

Finding the Fourth Proportional to 28,685.70, 43,031.21 and 11,156.85

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Solution

The fourth proportional to 28,685.70, 43,031.21 and 11,156.85 is: 16,736.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.70 : 43,031.21 = 11,156.85 : x
  2. Step 2: Convert to fraction form
    28,685.70/43,031.21 = 11,156.85/x
  3. Step 3: Cross multiply
    28,685.70x = 43,031.21 × 11,156.85
  4. Step 4: Simplify right side
    28,685.70x = 480,092,699.50
  5. Step 5: Solve for x
    x = 480,092,699.50/28,685.70
  6. Step 6: Final answer
    x = 16,736.31

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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.