Home / 28,440.41-42,660.63-7,663.91

Finding the Fourth Proportional to 28,440.41, 42,660.63 and 7,663.91

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Solution

The fourth proportional to 28,440.41, 42,660.63 and 7,663.91 is: 11,495.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.41 : 42,660.63 = 7,663.91 : x
  2. Step 2: Convert to fraction form
    28,440.41/42,660.63 = 7,663.91/x
  3. Step 3: Cross multiply
    28,440.41x = 42,660.63 × 7,663.91
  4. Step 4: Simplify right side
    28,440.41x = 326,947,015.56
  5. Step 5: Solve for x
    x = 326,947,015.56/28,440.41
  6. Step 6: Final answer
    x = 11,495.86

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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.