Home / 20,427,153.76-28,189,465.32-11,259,949.60

Finding the Fourth Proportional to 20,427,153.76, 28,189,465.32 and 11,259,949.60

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Solution

The fourth proportional to 20,427,153.76, 28,189,465.32 and 11,259,949.60 is: 15,538,726.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427,153.76 : 28,189,465.32 = 11,259,949.60 : x
  2. Step 2: Convert to fraction form
    20,427,153.76/28,189,465.32 = 11,259,949.60/x
  3. Step 3: Cross multiply
    20,427,153.76x = 28,189,465.32 × 11,259,949.60
  4. Step 4: Simplify right side
    20,427,153.76x = 317,411,958,754,147.88
  5. Step 5: Solve for x
    x = 317,411,958,754,147.88/20,427,153.76
  6. Step 6: Final answer
    x = 15,538,726.66

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1.5x scale

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.