Home / 12,421.77-18,632.49-3,061.90

Finding the Fourth Proportional to 12,421.77, 18,632.49 and 3,061.90

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Solution

The fourth proportional to 12,421.77, 18,632.49 and 3,061.90 is: 4,592.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.77 : 18,632.49 = 3,061.90 : x
  2. Step 2: Convert to fraction form
    12,421.77/18,632.49 = 3,061.90/x
  3. Step 3: Cross multiply
    12,421.77x = 18,632.49 × 3,061.90
  4. Step 4: Simplify right side
    12,421.77x = 57,050,821.13
  5. Step 5: Solve for x
    x = 57,050,821.13/12,421.77
  6. Step 6: Final answer
    x = 4,592.81

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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.