Home / 21,216.67-29,275.75-12,262.44

Finding the Fourth Proportional to 21,216.67, 29,275.75 and 12,262.44

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Solution

The fourth proportional to 21,216.67, 29,275.75 and 12,262.44 is: 16,920.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.67 : 29,275.75 = 12,262.44 : x
  2. Step 2: Convert to fraction form
    21,216.67/29,275.75 = 12,262.44/x
  3. Step 3: Cross multiply
    21,216.67x = 29,275.75 × 12,262.44
  4. Step 4: Simplify right side
    21,216.67x = 358,992,127.83
  5. Step 5: Solve for x
    x = 358,992,127.83/21,216.67
  6. Step 6: Final answer
    x = 16,920.29

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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.