Home / 20,377,522.72-28,101,680.40-13,037,678.56

Finding the Fourth Proportional to 20,377,522.72, 28,101,680.40 and 13,037,678.56

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Solution

The fourth proportional to 20,377,522.72, 28,101,680.40 and 13,037,678.56 is: 17,979,647.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377,522.72 : 28,101,680.40 = 13,037,678.56 : x
  2. Step 2: Convert to fraction form
    20,377,522.72/28,101,680.40 = 13,037,678.56/x
  3. Step 3: Cross multiply
    20,377,522.72x = 28,101,680.40 × 13,037,678.56
  4. Step 4: Simplify right side
    20,377,522.72x = 366,380,676,051,052.25
  5. Step 5: Solve for x
    x = 366,380,676,051,052.25/20,377,522.72
  6. Step 6: Final answer
    x = 17,979,647.53

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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.