Home / 20,699,425.36-30,903,595.76-15,816,175.12

Finding the Fourth Proportional to 20,699,425.36, 30,903,595.76 and 15,816,175.12

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Solution

The fourth proportional to 20,699,425.36, 30,903,595.76 and 15,816,175.12 is: 23,613,055.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699,425.36 : 30,903,595.76 = 15,816,175.12 : x
  2. Step 2: Convert to fraction form
    20,699,425.36/30,903,595.76 = 15,816,175.12/x
  3. Step 3: Cross multiply
    20,699,425.36x = 30,903,595.76 × 15,816,175.12
  4. Step 4: Simplify right side
    20,699,425.36x = 488,776,682,377,849.50
  5. Step 5: Solve for x
    x = 488,776,682,377,849.50/20,699,425.36
  6. Step 6: Final answer
    x = 23,613,055.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.