Home / 20,421,834.67-28,182,132.23-11,254,477.42

Finding the Fourth Proportional to 20,421,834.67, 28,182,132.23 and 11,254,477.42

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Solution

The fourth proportional to 20,421,834.67, 28,182,132.23 and 11,254,477.42 is: 15,531,179.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,834.67 : 28,182,132.23 = 11,254,477.42 : x
  2. Step 2: Convert to fraction form
    20,421,834.67/28,182,132.23 = 11,254,477.42/x
  3. Step 3: Cross multiply
    20,421,834.67x = 28,182,132.23 × 11,254,477.42
  4. Step 4: Simplify right side
    20,421,834.67x = 317,175,170,745,385.31
  5. Step 5: Solve for x
    x = 317,175,170,745,385.31/20,421,834.67
  6. Step 6: Final answer
    x = 15,531,179.05

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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.