Home / 20,780,865.45-31,174,709.91-6,403,935.69

Finding the Fourth Proportional to 20,780,865.45, 31,174,709.91 and 6,403,935.69

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Solution

The fourth proportional to 20,780,865.45, 31,174,709.91 and 6,403,935.69 is: 9,606,954.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780,865.45 : 31,174,709.91 = 6,403,935.69 : x
  2. Step 2: Convert to fraction form
    20,780,865.45/31,174,709.91 = 6,403,935.69/x
  3. Step 3: Cross multiply
    20,780,865.45x = 31,174,709.91 × 6,403,935.69
  4. Step 4: Simplify right side
    20,780,865.45x = 199,640,837,418,045.69
  5. Step 5: Solve for x
    x = 199,640,837,418,045.69/20,780,865.45
  6. Step 6: Final answer
    x = 9,606,954.91

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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.