Home / 21,649.98-29,865.96-13,149.84

Finding the Fourth Proportional to 21,649.98, 29,865.96 and 13,149.84

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Solution

The fourth proportional to 21,649.98, 29,865.96 and 13,149.84 is: 18,140.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649.98 : 29,865.96 = 13,149.84 : x
  2. Step 2: Convert to fraction form
    21,649.98/29,865.96 = 13,149.84/x
  3. Step 3: Cross multiply
    21,649.98x = 29,865.96 × 13,149.84
  4. Step 4: Simplify right side
    21,649.98x = 392,732,595.45
  5. Step 5: Solve for x
    x = 392,732,595.45/21,649.98
  6. Step 6: Final answer
    x = 18,140.09

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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.