Home / 21,248.58-29,323.69-11,687.98

Finding the Fourth Proportional to 21,248.58, 29,323.69 and 11,687.98

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Solution

The fourth proportional to 21,248.58, 29,323.69 and 11,687.98 is: 16,129.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.58 : 29,323.69 = 11,687.98 : x
  2. Step 2: Convert to fraction form
    21,248.58/29,323.69 = 11,687.98/x
  3. Step 3: Cross multiply
    21,248.58x = 29,323.69 × 11,687.98
  4. Step 4: Simplify right side
    21,248.58x = 342,734,654.70
  5. Step 5: Solve for x
    x = 342,734,654.70/21,248.58
  6. Step 6: Final answer
    x = 16,129.77

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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.