Home / 28,811.40-39,759-16,064.52

Finding the Fourth Proportional to 28,811.40, 39,759 and 16,064.52

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Solution

The fourth proportional to 28,811.40, 39,759 and 16,064.52 is: 22,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.40 : 39,759 = 16,064.52 : x
  2. Step 2: Convert to fraction form
    28,811.40/39,759 = 16,064.52/x
  3. Step 3: Cross multiply
    28,811.40x = 39,759 × 16,064.52
  4. Step 4: Simplify right side
    28,811.40x = 638,709,250.68
  5. Step 5: Solve for x
    x = 638,709,250.68/28,811.40
  6. Step 6: Final answer
    x = 22,168.63

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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.