Home / 20,864.79-28,777.48-14,491.31

Finding the Fourth Proportional to 20,864.79, 28,777.48 and 14,491.31

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Solution

The fourth proportional to 20,864.79, 28,777.48 and 14,491.31 is: 19,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.79 : 28,777.48 = 14,491.31 : x
  2. Step 2: Convert to fraction form
    20,864.79/28,777.48 = 14,491.31/x
  3. Step 3: Cross multiply
    20,864.79x = 28,777.48 × 14,491.31
  4. Step 4: Simplify right side
    20,864.79x = 417,023,203.58
  5. Step 5: Solve for x
    x = 417,023,203.58/20,864.79
  6. Step 6: Final answer
    x = 19,986.94

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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.