Home / 19,991,918.53-29,988,999.54-5,613,865.30

Finding the Fourth Proportional to 19,991,918.53, 29,988,999.54 and 5,613,865.30

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Solution

The fourth proportional to 19,991,918.53, 29,988,999.54 and 5,613,865.30 is: 8,421,112.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991,918.53 : 29,988,999.54 = 5,613,865.30 : x
  2. Step 2: Convert to fraction form
    19,991,918.53/29,988,999.54 = 5,613,865.30/x
  3. Step 3: Cross multiply
    19,991,918.53x = 29,988,999.54 × 5,613,865.30
  4. Step 4: Simplify right side
    19,991,918.53x = 168,354,203,899,321.94
  5. Step 5: Solve for x
    x = 168,354,203,899,321.94/19,991,918.53
  6. Step 6: Final answer
    x = 8,421,112.94

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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.