Home / 28,405.20-42,610.92-7,630.32

Finding the Fourth Proportional to 28,405.20, 42,610.92 and 7,630.32

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Solution

The fourth proportional to 28,405.20, 42,610.92 and 7,630.32 is: 11,446.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.20 : 42,610.92 = 7,630.32 : x
  2. Step 2: Convert to fraction form
    28,405.20/42,610.92 = 7,630.32/x
  3. Step 3: Cross multiply
    28,405.20x = 42,610.92 × 7,630.32
  4. Step 4: Simplify right side
    28,405.20x = 325,134,955.09
  5. Step 5: Solve for x
    x = 325,134,955.09/28,405.20
  6. Step 6: Final answer
    x = 11,446.32

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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.