Home / 28,405.70-42,611.67-7,630.82

Finding the Fourth Proportional to 28,405.70, 42,611.67 and 7,630.82

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Solution

The fourth proportional to 28,405.70, 42,611.67 and 7,630.82 is: 11,447.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.70 : 42,611.67 = 7,630.82 : x
  2. Step 2: Convert to fraction form
    28,405.70/42,611.67 = 7,630.82/x
  3. Step 3: Cross multiply
    28,405.70x = 42,611.67 × 7,630.82
  4. Step 4: Simplify right side
    28,405.70x = 325,161,983.67
  5. Step 5: Solve for x
    x = 325,161,983.67/28,405.70
  6. Step 6: Final answer
    x = 11,447.07

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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.