Home / 12,438,379.69-17,164,208.87-6,856,381.56

Finding the Fourth Proportional to 12,438,379.69, 17,164,208.87 and 6,856,381.56

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Solution

The fourth proportional to 12,438,379.69, 17,164,208.87 and 6,856,381.56 is: 9,461,390.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438,379.69 : 17,164,208.87 = 6,856,381.56 : x
  2. Step 2: Convert to fraction form
    12,438,379.69/17,164,208.87 = 6,856,381.56/x
  3. Step 3: Cross multiply
    12,438,379.69x = 17,164,208.87 × 6,856,381.56
  4. Step 4: Simplify right side
    12,438,379.69x = 117,684,365,153,974.52
  5. Step 5: Solve for x
    x = 117,684,365,153,974.52/12,438,379.69
  6. Step 6: Final answer
    x = 9,461,390.32

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Double scale
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1.5x scale

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.