Home / 20,551.31-28,360.75-11,598.79

Finding the Fourth Proportional to 20,551.31, 28,360.75 and 11,598.79

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Solution

The fourth proportional to 20,551.31, 28,360.75 and 11,598.79 is: 16,006.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.31 : 28,360.75 = 11,598.79 : x
  2. Step 2: Convert to fraction form
    20,551.31/28,360.75 = 11,598.79/x
  3. Step 3: Cross multiply
    20,551.31x = 28,360.75 × 11,598.79
  4. Step 4: Simplify right side
    20,551.31x = 328,950,212.69
  5. Step 5: Solve for x
    x = 328,950,212.69/20,551.31
  6. Step 6: Final answer
    x = 16,006.29

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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.