Home / 20,982,268-31,471,957.36-12,896,491.60

Finding the Fourth Proportional to 20,982,268, 31,471,957.36 and 12,896,491.60

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Solution

The fourth proportional to 20,982,268, 31,471,957.36 and 12,896,491.60 is: 19,343,849.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982,268 : 31,471,957.36 = 12,896,491.60 : x
  2. Step 2: Convert to fraction form
    20,982,268/31,471,957.36 = 12,896,491.60/x
  3. Step 3: Cross multiply
    20,982,268x = 31,471,957.36 × 12,896,491.60
  4. Step 4: Simplify right side
    20,982,268x = 405,877,833,728,798.19
  5. Step 5: Solve for x
    x = 405,877,833,728,798.19/20,982,268
  6. Step 6: Final answer
    x = 19,343,849.47

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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.