Home / 13,664,535.20-20,496,802.80-8,638,128.80

Finding the Fourth Proportional to 13,664,535.20, 20,496,802.80 and 8,638,128.80

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Solution

The fourth proportional to 13,664,535.20, 20,496,802.80 and 8,638,128.80 is: 12,957,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664,535.20 : 20,496,802.80 = 8,638,128.80 : x
  2. Step 2: Convert to fraction form
    13,664,535.20/20,496,802.80 = 8,638,128.80/x
  3. Step 3: Cross multiply
    13,664,535.20x = 20,496,802.80 × 8,638,128.80
  4. Step 4: Simplify right side
    13,664,535.20x = 177,054,022,574,600.66
  5. Step 5: Solve for x
    x = 177,054,022,574,600.66/13,664,535.20
  6. Step 6: Final answer
    x = 12,957,193.20

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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.