Home / 20,428.25-28,150.07-14,752.98

Finding the Fourth Proportional to 20,428.25, 28,150.07 and 14,752.98

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Solution

The fourth proportional to 20,428.25, 28,150.07 and 14,752.98 is: 20,329.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.25 : 28,150.07 = 14,752.98 : x
  2. Step 2: Convert to fraction form
    20,428.25/28,150.07 = 14,752.98/x
  3. Step 3: Cross multiply
    20,428.25x = 28,150.07 × 14,752.98
  4. Step 4: Simplify right side
    20,428.25x = 415,297,345.94
  5. Step 5: Solve for x
    x = 415,297,345.94/20,428.25
  6. Step 6: Final answer
    x = 20,329.57

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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.