Home / 28,912.32-43,359.84-10,440

Finding the Fourth Proportional to 28,912.32, 43,359.84 and 10,440

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Solution

The fourth proportional to 28,912.32, 43,359.84 and 10,440 is: 15,656.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.32 : 43,359.84 = 10,440 : x
  2. Step 2: Convert to fraction form
    28,912.32/43,359.84 = 10,440/x
  3. Step 3: Cross multiply
    28,912.32x = 43,359.84 × 10,440
  4. Step 4: Simplify right side
    28,912.32x = 452,676,729.60
  5. Step 5: Solve for x
    x = 452,676,729.60/28,912.32
  6. Step 6: Final answer
    x = 15,656.88

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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.