Home / 28,364.47-39,140.57-16,720.83

Finding the Fourth Proportional to 28,364.47, 39,140.57 and 16,720.83

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Solution

The fourth proportional to 28,364.47, 39,140.57 and 16,720.83 is: 23,073.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.47 : 39,140.57 = 16,720.83 : x
  2. Step 2: Convert to fraction form
    28,364.47/39,140.57 = 16,720.83/x
  3. Step 3: Cross multiply
    28,364.47x = 39,140.57 × 16,720.83
  4. Step 4: Simplify right side
    28,364.47x = 654,462,858.88
  5. Step 5: Solve for x
    x = 654,462,858.88/28,364.47
  6. Step 6: Final answer
    x = 23,073.33

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1.5x scale

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.