Home / 13,407,877.20-20,111,815.80-8,620,971.60

Finding the Fourth Proportional to 13,407,877.20, 20,111,815.80 and 8,620,971.60

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Solution

The fourth proportional to 13,407,877.20, 20,111,815.80 and 8,620,971.60 is: 12,931,457.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407,877.20 : 20,111,815.80 = 8,620,971.60 : x
  2. Step 2: Convert to fraction form
    13,407,877.20/20,111,815.80 = 8,620,971.60/x
  3. Step 3: Cross multiply
    13,407,877.20x = 20,111,815.80 × 8,620,971.60
  4. Step 4: Simplify right side
    13,407,877.20x = 173,383,392,836,231.28
  5. Step 5: Solve for x
    x = 173,383,392,836,231.28/13,407,877.20
  6. Step 6: Final answer
    x = 12,931,457.40

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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.