Home / 21,216.89-29,276.05-12,262.66

Finding the Fourth Proportional to 21,216.89, 29,276.05 and 12,262.66

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Solution

The fourth proportional to 21,216.89, 29,276.05 and 12,262.66 is: 16,920.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.89 : 29,276.05 = 12,262.66 : x
  2. Step 2: Convert to fraction form
    21,216.89/29,276.05 = 12,262.66/x
  3. Step 3: Cross multiply
    21,216.89x = 29,276.05 × 12,262.66
  4. Step 4: Simplify right side
    21,216.89x = 359,002,276.22
  5. Step 5: Solve for x
    x = 359,002,276.22/21,216.89
  6. Step 6: Final answer
    x = 16,920.59

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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.