Home / 21,520.96-29,699.04-12,089.62

Finding the Fourth Proportional to 21,520.96, 29,699.04 and 12,089.62

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Solution

The fourth proportional to 21,520.96, 29,699.04 and 12,089.62 is: 16,683.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.96 : 29,699.04 = 12,089.62 : x
  2. Step 2: Convert to fraction form
    21,520.96/29,699.04 = 12,089.62/x
  3. Step 3: Cross multiply
    21,520.96x = 29,699.04 × 12,089.62
  4. Step 4: Simplify right side
    21,520.96x = 359,050,107.96
  5. Step 5: Solve for x
    x = 359,050,107.96/21,520.96
  6. Step 6: Final answer
    x = 16,683.74

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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.