Home / 8,421.73-11,627.39-7,535.99

Finding the Fourth Proportional to 8,421.73, 11,627.39 and 7,535.99

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Solution

The fourth proportional to 8,421.73, 11,627.39 and 7,535.99 is: 10,404.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.73 : 11,627.39 = 7,535.99 : x
  2. Step 2: Convert to fraction form
    8,421.73/11,627.39 = 7,535.99/x
  3. Step 3: Cross multiply
    8,421.73x = 11,627.39 × 7,535.99
  4. Step 4: Simplify right side
    8,421.73x = 87,623,942.67
  5. Step 5: Solve for x
    x = 87,623,942.67/8,421.73
  6. Step 6: Final answer
    x = 10,404.51

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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.