Home / 42,651.04-63,986.41-12,664.62

Finding the Fourth Proportional to 42,651.04, 63,986.41 and 12,664.62

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Solution

The fourth proportional to 42,651.04, 63,986.41 and 12,664.62 is: 18,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,651.04 : 63,986.41 = 12,664.62 : x
  2. Step 2: Convert to fraction form
    42,651.04/63,986.41 = 12,664.62/x
  3. Step 3: Cross multiply
    42,651.04x = 63,986.41 × 12,664.62
  4. Step 4: Simplify right side
    42,651.04x = 810,363,295.89
  5. Step 5: Solve for x
    x = 810,363,295.89/42,651.04
  6. Step 6: Final answer
    x = 18,999.85

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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.