Home / 21,182.27-29,231.51-11,750.81

Finding the Fourth Proportional to 21,182.27, 29,231.51 and 11,750.81

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Solution

The fourth proportional to 21,182.27, 29,231.51 and 11,750.81 is: 16,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.27 : 29,231.51 = 11,750.81 : x
  2. Step 2: Convert to fraction form
    21,182.27/29,231.51 = 11,750.81/x
  3. Step 3: Cross multiply
    21,182.27x = 29,231.51 × 11,750.81
  4. Step 4: Simplify right side
    21,182.27x = 343,493,715.11
  5. Step 5: Solve for x
    x = 343,493,715.11/21,182.27
  6. Step 6: Final answer
    x = 16,216.10

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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.