Home / 20,829.92-28,715.38-14,851.21

Finding the Fourth Proportional to 20,829.92, 28,715.38 and 14,851.21

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Solution

The fourth proportional to 20,829.92, 28,715.38 and 14,851.21 is: 20,473.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.92 : 28,715.38 = 14,851.21 : x
  2. Step 2: Convert to fraction form
    20,829.92/28,715.38 = 14,851.21/x
  3. Step 3: Cross multiply
    20,829.92x = 28,715.38 × 14,851.21
  4. Step 4: Simplify right side
    20,829.92x = 426,458,029.69
  5. Step 5: Solve for x
    x = 426,458,029.69/20,829.92
  6. Step 6: Final answer
    x = 20,473.34

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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.