Home / 20,506,928.05-28,299,000.72-11,339,257.33

Finding the Fourth Proportional to 20,506,928.05, 28,299,000.72 and 11,339,257.33

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Solution

The fourth proportional to 20,506,928.05, 28,299,000.72 and 11,339,257.33 is: 15,647,865.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506,928.05 : 28,299,000.72 = 11,339,257.33 : x
  2. Step 2: Convert to fraction form
    20,506,928.05/28,299,000.72 = 11,339,257.33/x
  3. Step 3: Cross multiply
    20,506,928.05x = 28,299,000.72 × 11,339,257.33
  4. Step 4: Simplify right side
    20,506,928.05x = 320,889,651,345,935.25
  5. Step 5: Solve for x
    x = 320,889,651,345,935.25/20,506,928.05
  6. Step 6: Final answer
    x = 15,647,865.47

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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.