Home / 20,321,325.99-28,043,419.05-11,500,617.15

Finding the Fourth Proportional to 20,321,325.99, 28,043,419.05 and 11,500,617.15

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Solution

The fourth proportional to 20,321,325.99, 28,043,419.05 and 11,500,617.15 is: 15,870,845.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321,325.99 : 28,043,419.05 = 11,500,617.15 : x
  2. Step 2: Convert to fraction form
    20,321,325.99/28,043,419.05 = 11,500,617.15/x
  3. Step 3: Cross multiply
    20,321,325.99x = 28,043,419.05 × 11,500,617.15
  4. Step 4: Simplify right side
    20,321,325.99x = 322,516,626,071,066.75
  5. Step 5: Solve for x
    x = 322,516,626,071,066.75/20,321,325.99
  6. Step 6: Final answer
    x = 15,870,845.55

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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.