Home / 20,866.77-28,780.43-14,493.36

Finding the Fourth Proportional to 20,866.77, 28,780.43 and 14,493.36

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Solution

The fourth proportional to 20,866.77, 28,780.43 and 14,493.36 is: 19,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.77 : 28,780.43 = 14,493.36 : x
  2. Step 2: Convert to fraction form
    20,866.77/28,780.43 = 14,493.36/x
  3. Step 3: Cross multiply
    20,866.77x = 28,780.43 × 14,493.36
  4. Step 4: Simplify right side
    20,866.77x = 417,125,060.48
  5. Step 5: Solve for x
    x = 417,125,060.48/20,866.77
  6. Step 6: Final answer
    x = 19,989.92

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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.