Home / 21,431.98-29,573.47-11,999.02

Finding the Fourth Proportional to 21,431.98, 29,573.47 and 11,999.02

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Solution

The fourth proportional to 21,431.98, 29,573.47 and 11,999.02 is: 16,557.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.98 : 29,573.47 = 11,999.02 : x
  2. Step 2: Convert to fraction form
    21,431.98/29,573.47 = 11,999.02/x
  3. Step 3: Cross multiply
    21,431.98x = 29,573.47 × 11,999.02
  4. Step 4: Simplify right side
    21,431.98x = 354,852,658.00
  5. Step 5: Solve for x
    x = 354,852,658.00/21,431.98
  6. Step 6: Final answer
    x = 16,557.16

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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.