Home / 21,325.68-29,441.28-12,829.86

Finding the Fourth Proportional to 21,325.68, 29,441.28 and 12,829.86

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Solution

The fourth proportional to 21,325.68, 29,441.28 and 12,829.86 is: 17,712.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.68 : 29,441.28 = 12,829.86 : x
  2. Step 2: Convert to fraction form
    21,325.68/29,441.28 = 12,829.86/x
  3. Step 3: Cross multiply
    21,325.68x = 29,441.28 × 12,829.86
  4. Step 4: Simplify right side
    21,325.68x = 377,727,500.62
  5. Step 5: Solve for x
    x = 377,727,500.62/21,325.68
  6. Step 6: Final answer
    x = 17,712.33

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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.