Home / 21,245.09-29,317.02-11,813.45

Finding the Fourth Proportional to 21,245.09, 29,317.02 and 11,813.45

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Solution

The fourth proportional to 21,245.09, 29,317.02 and 11,813.45 is: 16,301.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.09 : 29,317.02 = 11,813.45 : x
  2. Step 2: Convert to fraction form
    21,245.09/29,317.02 = 11,813.45/x
  3. Step 3: Cross multiply
    21,245.09x = 29,317.02 × 11,813.45
  4. Step 4: Simplify right side
    21,245.09x = 346,335,149.92
  5. Step 5: Solve for x
    x = 346,335,149.92/21,245.09
  6. Step 6: Final answer
    x = 16,301.89

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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.