Home / 21,384.31-29,510.39-11,952.87

Finding the Fourth Proportional to 21,384.31, 29,510.39 and 11,952.87

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Solution

The fourth proportional to 21,384.31, 29,510.39 and 11,952.87 is: 16,494.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.31 : 29,510.39 = 11,952.87 : x
  2. Step 2: Convert to fraction form
    21,384.31/29,510.39 = 11,952.87/x
  3. Step 3: Cross multiply
    21,384.31x = 29,510.39 × 11,952.87
  4. Step 4: Simplify right side
    21,384.31x = 352,733,855.32
  5. Step 5: Solve for x
    x = 352,733,855.32/21,384.31
  6. Step 6: Final answer
    x = 16,494.98

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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.