Home / 13,780,056.21-20,656,189.35-8,666,140.80

Finding the Fourth Proportional to 13,780,056.21, 20,656,189.35 and 8,666,140.80

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Solution

The fourth proportional to 13,780,056.21, 20,656,189.35 and 8,666,140.80 is: 12,990,472.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780,056.21 : 20,656,189.35 = 8,666,140.80 : x
  2. Step 2: Convert to fraction form
    13,780,056.21/20,656,189.35 = 8,666,140.80/x
  3. Step 3: Cross multiply
    13,780,056.21x = 20,656,189.35 × 8,666,140.80
  4. Step 4: Simplify right side
    13,780,056.21x = 179,009,445,298,560.50
  5. Step 5: Solve for x
    x = 179,009,445,298,560.50/13,780,056.21
  6. Step 6: Final answer
    x = 12,990,472.79

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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.