Home / 28,438.29-42,658.04-8,716.41

Finding the Fourth Proportional to 28,438.29, 42,658.04 and 8,716.41

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Solution

The fourth proportional to 28,438.29, 42,658.04 and 8,716.41 is: 13,074.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.29 : 42,658.04 = 8,716.41 : x
  2. Step 2: Convert to fraction form
    28,438.29/42,658.04 = 8,716.41/x
  3. Step 3: Cross multiply
    28,438.29x = 42,658.04 × 8,716.41
  4. Step 4: Simplify right side
    28,438.29x = 371,824,988.23
  5. Step 5: Solve for x
    x = 371,824,988.23/28,438.29
  6. Step 6: Final answer
    x = 13,074.80

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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.