Home / 21,317.60-29,419.60-11,757.92

Finding the Fourth Proportional to 21,317.60, 29,419.60 and 11,757.92

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Solution

The fourth proportional to 21,317.60, 29,419.60 and 11,757.92 is: 16,226.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.60 : 29,419.60 = 11,757.92 : x
  2. Step 2: Convert to fraction form
    21,317.60/29,419.60 = 11,757.92/x
  3. Step 3: Cross multiply
    21,317.60x = 29,419.60 × 11,757.92
  4. Step 4: Simplify right side
    21,317.60x = 345,913,303.23
  5. Step 5: Solve for x
    x = 345,913,303.23/21,317.60
  6. Step 6: Final answer
    x = 16,226.65

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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.