Home / 20,867.42-28,797.54-11,436.50

Finding the Fourth Proportional to 20,867.42, 28,797.54 and 11,436.50

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Solution

The fourth proportional to 20,867.42, 28,797.54 and 11,436.50 is: 15,782.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.42 : 28,797.54 = 11,436.50 : x
  2. Step 2: Convert to fraction form
    20,867.42/28,797.54 = 11,436.50/x
  3. Step 3: Cross multiply
    20,867.42x = 28,797.54 × 11,436.50
  4. Step 4: Simplify right side
    20,867.42x = 329,343,066.21
  5. Step 5: Solve for x
    x = 329,343,066.21/20,867.42
  6. Step 6: Final answer
    x = 15,782.64

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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.