Home / 28,440.42-42,642.36-11,811.96

Finding the Fourth Proportional to 28,440.42, 42,642.36 and 11,811.96

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Solution

The fourth proportional to 28,440.42, 42,642.36 and 11,811.96 is: 17,710.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.42 : 42,642.36 = 11,811.96 : x
  2. Step 2: Convert to fraction form
    28,440.42/42,642.36 = 11,811.96/x
  3. Step 3: Cross multiply
    28,440.42x = 42,642.36 × 11,811.96
  4. Step 4: Simplify right side
    28,440.42x = 503,689,850.63
  5. Step 5: Solve for x
    x = 503,689,850.63/28,440.42
  6. Step 6: Final answer
    x = 17,710.35

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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.