Home / 20,982,267-31,471,955.87-12,896,490.60

Finding the Fourth Proportional to 20,982,267, 31,471,955.87 and 12,896,490.60

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Solution

The fourth proportional to 20,982,267, 31,471,955.87 and 12,896,490.60 is: 19,343,847.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982,267 : 31,471,955.87 = 12,896,490.60 : x
  2. Step 2: Convert to fraction form
    20,982,267/31,471,955.87 = 12,896,490.60/x
  3. Step 3: Cross multiply
    20,982,267x = 31,471,955.87 × 12,896,490.60
  4. Step 4: Simplify right side
    20,982,267x = 405,877,782,976,587.31
  5. Step 5: Solve for x
    x = 405,877,782,976,587.31/20,982,267
  6. Step 6: Final answer
    x = 19,343,847.97

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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.