Home / 21,384.28-29,509.66-11,952.82

Finding the Fourth Proportional to 21,384.28, 29,509.66 and 11,952.82

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Solution

The fourth proportional to 21,384.28, 29,509.66 and 11,952.82 is: 16,494.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.28 : 29,509.66 = 11,952.82 : x
  2. Step 2: Convert to fraction form
    21,384.28/29,509.66 = 11,952.82/x
  3. Step 3: Cross multiply
    21,384.28x = 29,509.66 × 11,952.82
  4. Step 4: Simplify right side
    21,384.28x = 352,723,654.24
  5. Step 5: Solve for x
    x = 352,723,654.24/21,384.28
  6. Step 6: Final answer
    x = 16,494.53

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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.