Home / 30,926.70-42,652.53-21,517.74

Finding the Fourth Proportional to 30,926.70, 42,652.53 and 21,517.74

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Solution

The fourth proportional to 30,926.70, 42,652.53 and 21,517.74 is: 29,676.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,926.70 : 42,652.53 = 21,517.74 : x
  2. Step 2: Convert to fraction form
    30,926.70/42,652.53 = 21,517.74/x
  3. Step 3: Cross multiply
    30,926.70x = 42,652.53 × 21,517.74
  4. Step 4: Simplify right side
    30,926.70x = 917,786,050.88
  5. Step 5: Solve for x
    x = 917,786,050.88/30,926.70
  6. Step 6: Final answer
    x = 29,676.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.