Home / 21,289.55-29,379.58-12,342.25

Finding the Fourth Proportional to 21,289.55, 29,379.58 and 12,342.25

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Solution

The fourth proportional to 21,289.55, 29,379.58 and 12,342.25 is: 17,032.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.55 : 29,379.58 = 12,342.25 : x
  2. Step 2: Convert to fraction form
    21,289.55/29,379.58 = 12,342.25/x
  3. Step 3: Cross multiply
    21,289.55x = 29,379.58 × 12,342.25
  4. Step 4: Simplify right side
    21,289.55x = 362,610,063.23
  5. Step 5: Solve for x
    x = 362,610,063.23/21,289.55
  6. Step 6: Final answer
    x = 17,032.31

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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.