Home / 35,811.76-53,717.70-12,421.75

Finding the Fourth Proportional to 35,811.76, 53,717.70 and 12,421.75

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Solution

The fourth proportional to 35,811.76, 53,717.70 and 12,421.75 is: 18,632.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,811.76 : 53,717.70 = 12,421.75 : x
  2. Step 2: Convert to fraction form
    35,811.76/53,717.70 = 12,421.75/x
  3. Step 3: Cross multiply
    35,811.76x = 53,717.70 × 12,421.75
  4. Step 4: Simplify right side
    35,811.76x = 667,267,839.98
  5. Step 5: Solve for x
    x = 667,267,839.98/35,811.76
  6. Step 6: Final answer
    x = 18,632.65

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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.