Home / 21,415.74-29,553.98-12,339.02

Finding the Fourth Proportional to 21,415.74, 29,553.98 and 12,339.02

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Solution

The fourth proportional to 21,415.74, 29,553.98 and 12,339.02 is: 17,027.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.74 : 29,553.98 = 12,339.02 : x
  2. Step 2: Convert to fraction form
    21,415.74/29,553.98 = 12,339.02/x
  3. Step 3: Cross multiply
    21,415.74x = 29,553.98 × 12,339.02
  4. Step 4: Simplify right side
    21,415.74x = 364,666,940.83
  5. Step 5: Solve for x
    x = 364,666,940.83/21,415.74
  6. Step 6: Final answer
    x = 17,027.99

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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.