Home / 15,521.76-23,163.40-13,860.96

Finding the Fourth Proportional to 15,521.76, 23,163.40 and 13,860.96

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Solution

The fourth proportional to 15,521.76, 23,163.40 and 13,860.96 is: 20,684.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521.76 : 23,163.40 = 13,860.96 : x
  2. Step 2: Convert to fraction form
    15,521.76/23,163.40 = 13,860.96/x
  3. Step 3: Cross multiply
    15,521.76x = 23,163.40 × 13,860.96
  4. Step 4: Simplify right side
    15,521.76x = 321,066,960.86
  5. Step 5: Solve for x
    x = 321,066,960.86/15,521.76
  6. Step 6: Final answer
    x = 20,684.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.