Home / 28,873.76-39,878.60-19,425.92

Finding the Fourth Proportional to 28,873.76, 39,878.60 and 19,425.92

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Solution

The fourth proportional to 28,873.76, 39,878.60 and 19,425.92 is: 26,829.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,873.76 : 39,878.60 = 19,425.92 : x
  2. Step 2: Convert to fraction form
    28,873.76/39,878.60 = 19,425.92/x
  3. Step 3: Cross multiply
    28,873.76x = 39,878.60 × 19,425.92
  4. Step 4: Simplify right side
    28,873.76x = 774,678,493.31
  5. Step 5: Solve for x
    x = 774,678,493.31/28,873.76
  6. Step 6: Final answer
    x = 26,829.84

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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.