Home / 20,875.05-28,807.47-11,925.36

Finding the Fourth Proportional to 20,875.05, 28,807.47 and 11,925.36

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Solution

The fourth proportional to 20,875.05, 28,807.47 and 11,925.36 is: 16,456.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.05 : 28,807.47 = 11,925.36 : x
  2. Step 2: Convert to fraction form
    20,875.05/28,807.47 = 11,925.36/x
  3. Step 3: Cross multiply
    20,875.05x = 28,807.47 × 11,925.36
  4. Step 4: Simplify right side
    20,875.05x = 343,539,450.44
  5. Step 5: Solve for x
    x = 343,539,450.44/20,875.05
  6. Step 6: Final answer
    x = 16,456.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.