Home / 21,262.91-29,345.76-12,313.22

Finding the Fourth Proportional to 21,262.91, 29,345.76 and 12,313.22

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Solution

The fourth proportional to 21,262.91, 29,345.76 and 12,313.22 is: 16,993.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.91 : 29,345.76 = 12,313.22 : x
  2. Step 2: Convert to fraction form
    21,262.91/29,345.76 = 12,313.22/x
  3. Step 3: Cross multiply
    21,262.91x = 29,345.76 × 12,313.22
  4. Step 4: Simplify right side
    21,262.91x = 361,340,652.22
  5. Step 5: Solve for x
    x = 361,340,652.22/21,262.91
  6. Step 6: Final answer
    x = 16,993.95

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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.