Home / 42,356.41-63,536.90-11,190.81

Finding the Fourth Proportional to 42,356.41, 63,536.90 and 11,190.81

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Solution

The fourth proportional to 42,356.41, 63,536.90 and 11,190.81 is: 16,786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,356.41 : 63,536.90 = 11,190.81 : x
  2. Step 2: Convert to fraction form
    42,356.41/63,536.90 = 11,190.81/x
  3. Step 3: Cross multiply
    42,356.41x = 63,536.90 × 11,190.81
  4. Step 4: Simplify right side
    42,356.41x = 711,029,375.89
  5. Step 5: Solve for x
    x = 711,029,375.89/42,356.41
  6. Step 6: Final answer
    x = 16,786.82

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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.