Home / 22,176.81-30,604-15,115.57

Finding the Fourth Proportional to 22,176.81, 30,604 and 15,115.57

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Solution

The fourth proportional to 22,176.81, 30,604 and 15,115.57 is: 20,859.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,176.81 : 30,604 = 15,115.57 : x
  2. Step 2: Convert to fraction form
    22,176.81/30,604 = 15,115.57/x
  3. Step 3: Cross multiply
    22,176.81x = 30,604 × 15,115.57
  4. Step 4: Simplify right side
    22,176.81x = 462,596,904.28
  5. Step 5: Solve for x
    x = 462,596,904.28/22,176.81
  6. Step 6: Final answer
    x = 20,859.49

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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.