Home / 21,488.49-29,655.89-11,929.27

Finding the Fourth Proportional to 21,488.49, 29,655.89 and 11,929.27

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Solution

The fourth proportional to 21,488.49, 29,655.89 and 11,929.27 is: 16,463.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.49 : 29,655.89 = 11,929.27 : x
  2. Step 2: Convert to fraction form
    21,488.49/29,655.89 = 11,929.27/x
  3. Step 3: Cross multiply
    21,488.49x = 29,655.89 × 11,929.27
  4. Step 4: Simplify right side
    21,488.49x = 353,773,118.90
  5. Step 5: Solve for x
    x = 353,773,118.90/21,488.49
  6. Step 6: Final answer
    x = 16,463.38

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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.