Home / 28,605.25-42,920.84-13,811.41

Finding the Fourth Proportional to 28,605.25, 42,920.84 and 13,811.41

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Solution

The fourth proportional to 28,605.25, 42,920.84 and 13,811.41 is: 20,723.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.25 : 42,920.84 = 13,811.41 : x
  2. Step 2: Convert to fraction form
    28,605.25/42,920.84 = 13,811.41/x
  3. Step 3: Cross multiply
    28,605.25x = 42,920.84 × 13,811.41
  4. Step 4: Simplify right side
    28,605.25x = 592,797,318.78
  5. Step 5: Solve for x
    x = 592,797,318.78/28,605.25
  6. Step 6: Final answer
    x = 20,723.37

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1.5x scale

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.