Home / 12,455,409.60-18,679,615.20-3,938,356.80

Finding the Fourth Proportional to 12,455,409.60, 18,679,615.20 and 3,938,356.80

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Solution

The fourth proportional to 12,455,409.60, 18,679,615.20 and 3,938,356.80 is: 5,906,428.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,409.60 : 18,679,615.20 = 3,938,356.80 : x
  2. Step 2: Convert to fraction form
    12,455,409.60/18,679,615.20 = 3,938,356.80/x
  3. Step 3: Cross multiply
    12,455,409.60x = 18,679,615.20 × 3,938,356.80
  4. Step 4: Simplify right side
    12,455,409.60x = 73,566,989,544,303.36
  5. Step 5: Solve for x
    x = 73,566,989,544,303.36/12,455,409.60
  6. Step 6: Final answer
    x = 5,906,428.77

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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.