Home / 21,390.94-29,488.62-14,665.92

Finding the Fourth Proportional to 21,390.94, 29,488.62 and 14,665.92

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Solution

The fourth proportional to 21,390.94, 29,488.62 and 14,665.92 is: 20,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.94 : 29,488.62 = 14,665.92 : x
  2. Step 2: Convert to fraction form
    21,390.94/29,488.62 = 14,665.92/x
  3. Step 3: Cross multiply
    21,390.94x = 29,488.62 × 14,665.92
  4. Step 4: Simplify right side
    21,390.94x = 432,477,741.83
  5. Step 5: Solve for x
    x = 432,477,741.83/21,390.94
  6. Step 6: Final answer
    x = 20,217.80

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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.