Home / 21,105,865.20-31,658,797.80-12,595,810.80

Finding the Fourth Proportional to 21,105,865.20, 31,658,797.80 and 12,595,810.80

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Solution

The fourth proportional to 21,105,865.20, 31,658,797.80 and 12,595,810.80 is: 18,893,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105,865.20 : 31,658,797.80 = 12,595,810.80 : x
  2. Step 2: Convert to fraction form
    21,105,865.20/31,658,797.80 = 12,595,810.80/x
  3. Step 3: Cross multiply
    21,105,865.20x = 31,658,797.80 × 12,595,810.80
  4. Step 4: Simplify right side
    21,105,865.20x = 398,768,227,244,256.25
  5. Step 5: Solve for x
    x = 398,768,227,244,256.25/21,105,865.20
  6. Step 6: Final answer
    x = 18,893,716.20

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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.