Home / 20,733.10-28,611.61-11,780.17

Finding the Fourth Proportional to 20,733.10, 28,611.61 and 11,780.17

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Solution

The fourth proportional to 20,733.10, 28,611.61 and 11,780.17 is: 16,256.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.10 : 28,611.61 = 11,780.17 : x
  2. Step 2: Convert to fraction form
    20,733.10/28,611.61 = 11,780.17/x
  3. Step 3: Cross multiply
    20,733.10x = 28,611.61 × 11,780.17
  4. Step 4: Simplify right side
    20,733.10x = 337,049,427.81
  5. Step 5: Solve for x
    x = 337,049,427.81/20,733.10
  6. Step 6: Final answer
    x = 16,256.59

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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.