Home / 21,124.99-31,676.55-11,261.62

Finding the Fourth Proportional to 21,124.99, 31,676.55 and 11,261.62

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Solution

The fourth proportional to 21,124.99, 31,676.55 and 11,261.62 is: 16,886.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.99 : 31,676.55 = 11,261.62 : x
  2. Step 2: Convert to fraction form
    21,124.99/31,676.55 = 11,261.62/x
  3. Step 3: Cross multiply
    21,124.99x = 31,676.55 × 11,261.62
  4. Step 4: Simplify right side
    21,124.99x = 356,729,269.01
  5. Step 5: Solve for x
    x = 356,729,269.01/21,124.99
  6. Step 6: Final answer
    x = 16,886.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.