Home / 21,146.99-29,182.73-11,715.53

Finding the Fourth Proportional to 21,146.99, 29,182.73 and 11,715.53

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Solution

The fourth proportional to 21,146.99, 29,182.73 and 11,715.53 is: 16,167.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.99 : 29,182.73 = 11,715.53 : x
  2. Step 2: Convert to fraction form
    21,146.99/29,182.73 = 11,715.53/x
  3. Step 3: Cross multiply
    21,146.99x = 29,182.73 × 11,715.53
  4. Step 4: Simplify right side
    21,146.99x = 341,890,944.31
  5. Step 5: Solve for x
    x = 341,890,944.31/21,146.99
  6. Step 6: Final answer
    x = 16,167.36

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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.