Home / 18,970.32-28,458.82-6,487.41

Finding the Fourth Proportional to 18,970.32, 28,458.82 and 6,487.41

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Solution

The fourth proportional to 18,970.32, 28,458.82 and 6,487.41 is: 9,732.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.32 : 28,458.82 = 6,487.41 : x
  2. Step 2: Convert to fraction form
    18,970.32/28,458.82 = 6,487.41/x
  3. Step 3: Cross multiply
    18,970.32x = 28,458.82 × 6,487.41
  4. Step 4: Simplify right side
    18,970.32x = 184,624,033.46
  5. Step 5: Solve for x
    x = 184,624,033.46/18,970.32
  6. Step 6: Final answer
    x = 9,732.26

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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.