Home / 20,563,453.55-28,380,611.62-13,020,278.90

Finding the Fourth Proportional to 20,563,453.55, 28,380,611.62 and 13,020,278.90

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Solution

The fourth proportional to 20,563,453.55, 28,380,611.62 and 13,020,278.90 is: 17,969,913.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563,453.55 : 28,380,611.62 = 13,020,278.90 : x
  2. Step 2: Convert to fraction form
    20,563,453.55/28,380,611.62 = 13,020,278.90/x
  3. Step 3: Cross multiply
    20,563,453.55x = 28,380,611.62 × 13,020,278.90
  4. Step 4: Simplify right side
    20,563,453.55x = 369,523,478,644,980.81
  5. Step 5: Solve for x
    x = 369,523,478,644,980.81/20,563,453.55
  6. Step 6: Final answer
    x = 17,969,913.36

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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.