Home / 20,928,528.99-28,881,705.90-11,509,692.25

Finding the Fourth Proportional to 20,928,528.99, 28,881,705.90 and 11,509,692.25

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Solution

The fourth proportional to 20,928,528.99, 28,881,705.90 and 11,509,692.25 is: 15,883,560.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928,528.99 : 28,881,705.90 = 11,509,692.25 : x
  2. Step 2: Convert to fraction form
    20,928,528.99/28,881,705.90 = 11,509,692.25/x
  3. Step 3: Cross multiply
    20,928,528.99x = 28,881,705.90 × 11,509,692.25
  4. Step 4: Simplify right side
    20,928,528.99x = 332,419,546,564,009.25
  5. Step 5: Solve for x
    x = 332,419,546,564,009.25/20,928,528.99
  6. Step 6: Final answer
    x = 15,883,560.03

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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.