Home / 21,559.96-29,752.44-12,128.50

Finding the Fourth Proportional to 21,559.96, 29,752.44 and 12,128.50

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Solution

The fourth proportional to 21,559.96, 29,752.44 and 12,128.50 is: 16,737.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.96 : 29,752.44 = 12,128.50 : x
  2. Step 2: Convert to fraction form
    21,559.96/29,752.44 = 12,128.50/x
  3. Step 3: Cross multiply
    21,559.96x = 29,752.44 × 12,128.50
  4. Step 4: Simplify right side
    21,559.96x = 360,852,468.54
  5. Step 5: Solve for x
    x = 360,852,468.54/21,559.96
  6. Step 6: Final answer
    x = 16,737.16

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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.