Home / 20,427,812.92-28,190,368.60-11,135,400.76

Finding the Fourth Proportional to 20,427,812.92, 28,190,368.60 and 11,135,400.76

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Solution

The fourth proportional to 20,427,812.92, 28,190,368.60 and 11,135,400.76 is: 15,366,845.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427,812.92 : 28,190,368.60 = 11,135,400.76 : x
  2. Step 2: Convert to fraction form
    20,427,812.92/28,190,368.60 = 11,135,400.76/x
  3. Step 3: Cross multiply
    20,427,812.92x = 28,190,368.60 × 11,135,400.76
  4. Step 4: Simplify right side
    20,427,812.92x = 313,911,051,933,120.12
  5. Step 5: Solve for x
    x = 313,911,051,933,120.12/20,427,812.92
  6. Step 6: Final answer
    x = 15,366,845.84

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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.