Home / 20,928,538.15-28,881,718.49-11,509,701.41

Finding the Fourth Proportional to 20,928,538.15, 28,881,718.49 and 11,509,701.41

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Solution

The fourth proportional to 20,928,538.15, 28,881,718.49 and 11,509,701.41 is: 15,883,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928,538.15 : 28,881,718.49 = 11,509,701.41 : x
  2. Step 2: Convert to fraction form
    20,928,538.15/28,881,718.49 = 11,509,701.41/x
  3. Step 3: Cross multiply
    20,928,538.15x = 28,881,718.49 × 11,509,701.41
  4. Step 4: Simplify right side
    20,928,538.15x = 332,419,956,128,554.62
  5. Step 5: Solve for x
    x = 332,419,956,128,554.62/20,928,538.15
  6. Step 6: Final answer
    x = 15,883,572.65

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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.