Home / 21,384.24-29,509.73-11,823.88

Finding the Fourth Proportional to 21,384.24, 29,509.73 and 11,823.88

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Solution

The fourth proportional to 21,384.24, 29,509.73 and 11,823.88 is: 16,316.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.24 : 29,509.73 = 11,823.88 : x
  2. Step 2: Convert to fraction form
    21,384.24/29,509.73 = 11,823.88/x
  3. Step 3: Cross multiply
    21,384.24x = 29,509.73 × 11,823.88
  4. Step 4: Simplify right side
    21,384.24x = 348,919,462.14
  5. Step 5: Solve for x
    x = 348,919,462.14/21,384.24
  6. Step 6: Final answer
    x = 16,316.66

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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.