Home / 21,262.72-29,342.10-12,310.60

Finding the Fourth Proportional to 21,262.72, 29,342.10 and 12,310.60

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Solution

The fourth proportional to 21,262.72, 29,342.10 and 12,310.60 is: 16,988.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.72 : 29,342.10 = 12,310.60 : x
  2. Step 2: Convert to fraction form
    21,262.72/29,342.10 = 12,310.60/x
  3. Step 3: Cross multiply
    21,262.72x = 29,342.10 × 12,310.60
  4. Step 4: Simplify right side
    21,262.72x = 361,218,856.26
  5. Step 5: Solve for x
    x = 361,218,856.26/21,262.72
  6. Step 6: Final answer
    x = 16,988.37

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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.