Home / 20,736,137.60-31,104,206.40-12,673,980.80

Finding the Fourth Proportional to 20,736,137.60, 31,104,206.40 and 12,673,980.80

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Solution

The fourth proportional to 20,736,137.60, 31,104,206.40 and 12,673,980.80 is: 19,010,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,137.60 : 31,104,206.40 = 12,673,980.80 : x
  2. Step 2: Convert to fraction form
    20,736,137.60/31,104,206.40 = 12,673,980.80/x
  3. Step 3: Cross multiply
    20,736,137.60x = 31,104,206.40 × 12,673,980.80
  4. Step 4: Simplify right side
    20,736,137.60x = 394,214,114,712,837.12
  5. Step 5: Solve for x
    x = 394,214,114,712,837.12/20,736,137.60
  6. Step 6: Final answer
    x = 19,010,971.20

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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.