Home / 20,531,406.87-28,331,403.35-12,269,824.38

Finding the Fourth Proportional to 20,531,406.87, 28,331,403.35 and 12,269,824.38

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Solution

The fourth proportional to 20,531,406.87, 28,331,403.35 and 12,269,824.38 is: 16,931,199.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531,406.87 : 28,331,403.35 = 12,269,824.38 : x
  2. Step 2: Convert to fraction form
    20,531,406.87/28,331,403.35 = 12,269,824.38/x
  3. Step 3: Cross multiply
    20,531,406.87x = 28,331,403.35 × 12,269,824.38
  4. Step 4: Simplify right side
    20,531,406.87x = 347,621,343,482,094.56
  5. Step 5: Solve for x
    x = 347,621,343,482,094.56/20,531,406.87
  6. Step 6: Final answer
    x = 16,931,199.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.