Home / 20,872,005.10-31,308,007.65-5,725,912.30

Finding the Fourth Proportional to 20,872,005.10, 31,308,007.65 and 5,725,912.30

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Solution

The fourth proportional to 20,872,005.10, 31,308,007.65 and 5,725,912.30 is: 8,588,868.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872,005.10 : 31,308,007.65 = 5,725,912.30 : x
  2. Step 2: Convert to fraction form
    20,872,005.10/31,308,007.65 = 5,725,912.30/x
  3. Step 3: Cross multiply
    20,872,005.10x = 31,308,007.65 × 5,725,912.30
  4. Step 4: Simplify right side
    20,872,005.10x = 179,266,906,091,629.09
  5. Step 5: Solve for x
    x = 179,266,906,091,629.09/20,872,005.10
  6. Step 6: Final answer
    x = 8,588,868.45

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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.