Home / 21,289.92-29,380.10-12,342.62

Finding the Fourth Proportional to 21,289.92, 29,380.10 and 12,342.62

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Solution

The fourth proportional to 21,289.92, 29,380.10 and 12,342.62 is: 17,032.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.92 : 29,380.10 = 12,342.62 : x
  2. Step 2: Convert to fraction form
    21,289.92/29,380.10 = 12,342.62/x
  3. Step 3: Cross multiply
    21,289.92x = 29,380.10 × 12,342.62
  4. Step 4: Simplify right side
    21,289.92x = 362,627,409.86
  5. Step 5: Solve for x
    x = 362,627,409.86/21,289.92
  6. Step 6: Final answer
    x = 17,032.82

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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.