Home / 20,472.59-28,260.09-13,777.31

Finding the Fourth Proportional to 20,472.59, 28,260.09 and 13,777.31

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Solution

The fourth proportional to 20,472.59, 28,260.09 and 13,777.31 is: 19,018.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.59 : 28,260.09 = 13,777.31 : x
  2. Step 2: Convert to fraction form
    20,472.59/28,260.09 = 13,777.31/x
  3. Step 3: Cross multiply
    20,472.59x = 28,260.09 × 13,777.31
  4. Step 4: Simplify right side
    20,472.59x = 389,347,879.26
  5. Step 5: Solve for x
    x = 389,347,879.26/20,472.59
  6. Step 6: Final answer
    x = 19,018.01

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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.