Home / 18,786,857.95-28,171,404.90-7,277,715.76

Finding the Fourth Proportional to 18,786,857.95, 28,171,404.90 and 7,277,715.76

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Solution

The fourth proportional to 18,786,857.95, 28,171,404.90 and 7,277,715.76 is: 10,913,132.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786,857.95 : 28,171,404.90 = 7,277,715.76 : x
  2. Step 2: Convert to fraction form
    18,786,857.95/28,171,404.90 = 7,277,715.76/x
  3. Step 3: Cross multiply
    18,786,857.95x = 28,171,404.90 × 7,277,715.76
  4. Step 4: Simplify right side
    18,786,857.95x = 205,023,477,422,071.22
  5. Step 5: Solve for x
    x = 205,023,477,422,071.22/18,786,857.95
  6. Step 6: Final answer
    x = 10,913,132.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.