Home / 40,902.29-61,354.20-12,821.72

Finding the Fourth Proportional to 40,902.29, 61,354.20 and 12,821.72

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Solution

The fourth proportional to 40,902.29, 61,354.20 and 12,821.72 is: 19,232.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,902.29 : 61,354.20 = 12,821.72 : x
  2. Step 2: Convert to fraction form
    40,902.29/61,354.20 = 12,821.72/x
  3. Step 3: Cross multiply
    40,902.29x = 61,354.20 × 12,821.72
  4. Step 4: Simplify right side
    40,902.29x = 786,666,066.45
  5. Step 5: Solve for x
    x = 786,666,066.45/40,902.29
  6. Step 6: Final answer
    x = 19,232.81

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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.