Home / 13,680,820.80-20,507,695.20-6,479,697.60

Finding the Fourth Proportional to 13,680,820.80, 20,507,695.20 and 6,479,697.60

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Solution

The fourth proportional to 13,680,820.80, 20,507,695.20 and 6,479,697.60 is: 9,713,135.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680,820.80 : 20,507,695.20 = 6,479,697.60 : x
  2. Step 2: Convert to fraction form
    13,680,820.80/20,507,695.20 = 6,479,697.60/x
  3. Step 3: Cross multiply
    13,680,820.80x = 20,507,695.20 × 6,479,697.60
  4. Step 4: Simplify right side
    13,680,820.80x = 132,883,663,368,971.50
  5. Step 5: Solve for x
    x = 132,883,663,368,971.50/13,680,820.80
  6. Step 6: Final answer
    x = 9,713,135.29

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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.